<?xml version="1.0" encoding="UTF-8"?>
			<!-- Generated by DocuBuilder 4.3 -->
		<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"  xmlns:macquarie="http://macquarie/20260731"><link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#N1aCover" roleURI="http://xbrl.sec.gov/rr/role/N1aCover"/><link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#RiskReturn" roleURI="http://xbrl.sec.gov/rr/role/RiskReturn"/><link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#PerformanceManagement" roleURI="http://xbrl.sec.gov/rr/role/PerformanceManagement"/><link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#InvestmentStrategy" roleURI="http://xbrl.sec.gov/rr/role/InvestmentStrategy"/><link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#FeesAndExpenses" roleURI="http://xbrl.sec.gov/rr/role/FeesAndExpenses"/><link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#InvestmentRisks" roleURI="http://xbrl.sec.gov/rr/role/InvestmentRisks"/><link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#N1aSupplement" roleURI="http://xbrl.sec.gov/rr/role/N1aSupplement"/><link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#ShareholderFeesData" roleURI="http://xbrl.sec.gov/rr/role/ShareholderFeesData"/><link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#OperatingExpensesData" roleURI="http://xbrl.sec.gov/rr/role/OperatingExpensesData"/><link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#ExpenseExample" roleURI="http://xbrl.sec.gov/rr/role/ExpenseExample"/><link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#ExpenseExampleNoRedemption" roleURI="http://xbrl.sec.gov/rr/role/ExpenseExampleNoRedemption"/><link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#BarChartData" roleURI="http://xbrl.sec.gov/rr/role/BarChartData"/><link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#PerformanceTableData" roleURI="http://xbrl.sec.gov/rr/role/PerformanceTableData"/><link:presentationLink xlink:role="http://xbrl.sec.gov/rr/role/N1aCover" xlink:type="extended"><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentInformationDocumentAxis" xlink:label="DocumentInformationDocumentAxis"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_Djulyoptimumpro_2790Member" xlink:label="Djulyoptimumpro_2790Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DocumentInformationDocumentAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"  use="optional" xlink:to="Djulyoptimumpro_2790Member" order="103" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_Djulyoptimumsai_2812Member" xlink:label="Djulyoptimumsai_2812Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DocumentInformationDocumentAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"  use="optional" xlink:to="Djulyoptimumsai_2812Member" order="104" /></link:presentationLink><link:presentationLink xlink:role="http://xbrl.sec.gov/rr/role/RiskReturn" xlink:type="extended"><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentInformationDocumentAxis" xlink:label="DocumentInformationDocumentAxis"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_Djulyoptimumpro_2790Member" xlink:label="Djulyoptimumpro_2790Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DocumentInformationDocumentAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"  use="optional" xlink:to="Djulyoptimumpro_2790Member" order="103" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_Djulyoptimumsai_2812Member" xlink:label="Djulyoptimumsai_2812Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DocumentInformationDocumentAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"  use="optional" xlink:to="Djulyoptimumsai_2812Member" order="104" /><link:loc xlink:type="locator" xlink:label="LegalEntityAxis" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002422Member" xlink:label="S000002422Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002422Member" order="204" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002424Member" xlink:label="S000002424Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002424Member" order="205" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002425Member" xlink:label="S000002425Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002425Member" order="206" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002421Member" xlink:label="S000002421Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002421Member" order="207" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002420Member" xlink:label="S000002420Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002420Member" order="208" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002423Member" xlink:label="S000002423Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002423Member" order="209" /></link:presentationLink><link:presentationLink xlink:role="http://xbrl.sec.gov/rr/role/N1aSupplement" xlink:type="extended"><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentInformationDocumentAxis" xlink:label="DocumentInformationDocumentAxis"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_Djulyoptimumpro_2790Member" xlink:label="Djulyoptimumpro_2790Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DocumentInformationDocumentAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"  use="optional" xlink:to="Djulyoptimumpro_2790Member" order="103" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_Djulyoptimumsai_2812Member" xlink:label="Djulyoptimumsai_2812Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DocumentInformationDocumentAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"  use="optional" xlink:to="Djulyoptimumsai_2812Member" order="104" /><link:loc xlink:type="locator" xlink:label="LegalEntityAxis" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002422Member" xlink:label="S000002422Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002422Member" order="204" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002424Member" xlink:label="S000002424Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002424Member" order="205" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002425Member" xlink:label="S000002425Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002425Member" order="206" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002421Member" xlink:label="S000002421Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002421Member" order="207" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002420Member" xlink:label="S000002420Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002420Member" order="208" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002423Member" xlink:label="S000002423Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002423Member" order="209" /></link:presentationLink><link:presentationLink xlink:role="http://xbrl.sec.gov/rr/role/PerformanceManagement" xlink:type="extended"><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentInformationDocumentAxis" xlink:label="DocumentInformationDocumentAxis"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_Djulyoptimumpro_2790Member" xlink:label="Djulyoptimumpro_2790Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DocumentInformationDocumentAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"  use="optional" xlink:to="Djulyoptimumpro_2790Member" order="103" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_Djulyoptimumsai_2812Member" xlink:label="Djulyoptimumsai_2812Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DocumentInformationDocumentAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"  use="optional" xlink:to="Djulyoptimumsai_2812Member" order="104" /><link:loc xlink:type="locator" xlink:label="LegalEntityAxis" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002422Member" xlink:label="S000002422Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002422Member" order="204" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002424Member" xlink:label="S000002424Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002424Member" order="205" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002425Member" xlink:label="S000002425Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002425Member" order="206" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002421Member" xlink:label="S000002421Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002421Member" order="207" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002420Member" xlink:label="S000002420Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002420Member" order="208" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002423Member" xlink:label="S000002423Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002423Member" order="209" /><link:loc xlink:type="locator" xlink:label="ClassAxis" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#oef_ClassAxis"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006451Member"  xlink:label="C000006451Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006451Member" order="302" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006459Member"  xlink:label="C000006459Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006459Member" order="303" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006463Member"  xlink:label="C000006463Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006463Member" order="304" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006447Member"  xlink:label="C000006447Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006447Member" order="305" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006443Member"  xlink:label="C000006443Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006443Member" order="306" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006455Member"  xlink:label="C000006455Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006455Member" order="307" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006453Member"  xlink:label="C000006453Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006453Member" order="308" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006461Member"  xlink:label="C000006461Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006461Member" order="309" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006465Member"  xlink:label="C000006465Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006465Member" order="310" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006449Member"  xlink:label="C000006449Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006449Member" order="311" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006445Member"  xlink:label="C000006445Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006445Member" order="312" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006457Member"  xlink:label="C000006457Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006457Member" order="313" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006454Member"  xlink:label="C000006454Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006454Member" order="314" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006462Member"  xlink:label="C000006462Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006462Member" order="315" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006466Member"  xlink:label="C000006466Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006466Member" order="316" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006450Member"  xlink:label="C000006450Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006450Member" order="317" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006446Member"  xlink:label="C000006446Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006446Member" order="318" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006458Member"  xlink:label="C000006458Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006458Member" order="319" /></link:presentationLink><link:presentationLink xlink:role="http://xbrl.sec.gov/rr/role/PerformanceTableData" xlink:type="extended"><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#oef_ProspectusTable" xlink:label="ProspectusTable"/><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentInformationDocumentAxis" xlink:label="DocumentInformationDocumentAxis"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ProspectusTable" xlink:to="DocumentInformationDocumentAxis" preferredLabel="http://www.xbrl.org/2003/role/label" order="12.0"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_Djulyoptimumpro_2790Member" xlink:label="Djulyoptimumpro_2790Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DocumentInformationDocumentAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"  use="optional" xlink:to="Djulyoptimumpro_2790Member" order="103" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_Djulyoptimumsai_2812Member" xlink:label="Djulyoptimumsai_2812Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DocumentInformationDocumentAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"  use="optional" xlink:to="Djulyoptimumsai_2812Member" order="104" /><link:loc xlink:type="locator" xlink:label="LegalEntityAxis" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ProspectusTable" xlink:to="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/label" order="20"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002422Member" xlink:label="S000002422Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002422Member" order="204" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002424Member" xlink:label="S000002424Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002424Member" order="205" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002425Member" xlink:label="S000002425Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002425Member" order="206" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002421Member" xlink:label="S000002421Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002421Member" order="207" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002420Member" xlink:label="S000002420Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002420Member" order="208" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002423Member" xlink:label="S000002423Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002423Member" order="209" /><link:loc xlink:type="locator" xlink:label="ClassAxis" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#oef_ClassAxis"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ProspectusTable" xlink:to="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/label" order="30.0"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006451Member"  xlink:label="C000006451Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006451Member" order="302" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006459Member"  xlink:label="C000006459Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006459Member" order="303" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006463Member"  xlink:label="C000006463Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006463Member" order="304" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006447Member"  xlink:label="C000006447Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006447Member" order="305" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006443Member"  xlink:label="C000006443Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006443Member" order="306" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006455Member"  xlink:label="C000006455Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006455Member" order="307" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006453Member"  xlink:label="C000006453Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006453Member" order="308" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006461Member"  xlink:label="C000006461Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006461Member" order="309" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006465Member"  xlink:label="C000006465Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006465Member" order="310" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006449Member"  xlink:label="C000006449Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006449Member" order="311" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006445Member"  xlink:label="C000006445Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006445Member" order="312" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006457Member"  xlink:label="C000006457Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006457Member" order="313" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006454Member"  xlink:label="C000006454Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006454Member" order="314" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006462Member"  xlink:label="C000006462Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006462Member" order="315" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006466Member"  xlink:label="C000006466Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006466Member" order="316" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006450Member"  xlink:label="C000006450Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006450Member" order="317" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006446Member"  xlink:label="C000006446Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006446Member" order="318" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006458Member"  xlink:label="C000006458Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006458Member" order="319" /><link:loc xlink:type="locator" xlink:label="PerformanceMeasureAxis" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#oef_PerformanceMeasureAxis"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ProspectusTable" xlink:to="PerformanceMeasureAxis" preferredLabel="http://www.xbrl.org/2003/role/label" order="40.0"/><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#oef_AfterTaxesOnDistributionsMember" xlink:label="AfterTaxesOnDistributionsMember"/><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#oef_AfterTaxesOnDistributionsAndSalesMember" xlink:label="AfterTaxesOnDistributionsAndSalesMember"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="PerformanceMeasureAxis" xlink:to="AfterTaxesOnDistributionsMember" use="optional" order="405.0"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="PerformanceMeasureAxis" xlink:to="AfterTaxesOnDistributionsAndSalesMember" use="optional" order="406.0"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench20260126139Member" xlink:label="bench20260126139Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="PerformanceMeasureAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="bench20260126139Member" order="1425.0" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench20260421209Member" xlink:label="bench20260421209Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="PerformanceMeasureAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="bench20260421209Member" order="1426.0" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench20260126140Member" xlink:label="bench20260126140Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="PerformanceMeasureAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="bench20260126140Member" order="1429.0" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench20260421233Member" xlink:label="bench20260421233Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="PerformanceMeasureAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="bench20260421233Member" order="1432.0" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench20260723269Member" xlink:label="bench20260723269Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="PerformanceMeasureAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="bench20260723269Member" order="1433.0" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench20260723270Member" xlink:label="bench20260723270Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="PerformanceMeasureAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="bench20260723270Member" order="1434.0" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench20260723271Member" xlink:label="bench20260723271Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="PerformanceMeasureAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="bench20260723271Member" order="1437.0" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench20260723272Member" xlink:label="bench20260723272Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="PerformanceMeasureAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="bench20260723272Member" order="1438.0" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench20251120112Member" xlink:label="bench20251120112Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="PerformanceMeasureAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="bench20251120112Member" order="1447.0" /></link:presentationLink><link:presentationLink xlink:role="http://xbrl.sec.gov/rr/role/InvestmentStrategy" xlink:type="extended"><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentInformationDocumentAxis" xlink:label="DocumentInformationDocumentAxis"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_Djulyoptimumpro_2790Member" xlink:label="Djulyoptimumpro_2790Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DocumentInformationDocumentAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"  use="optional" xlink:to="Djulyoptimumpro_2790Member" order="103" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_Djulyoptimumsai_2812Member" xlink:label="Djulyoptimumsai_2812Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DocumentInformationDocumentAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"  use="optional" xlink:to="Djulyoptimumsai_2812Member" order="104" /><link:loc xlink:type="locator" xlink:label="LegalEntityAxis" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002422Member" xlink:label="S000002422Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002422Member" order="204" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002424Member" xlink:label="S000002424Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002424Member" order="205" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002425Member" xlink:label="S000002425Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002425Member" order="206" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002421Member" xlink:label="S000002421Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002421Member" order="207" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002420Member" xlink:label="S000002420Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002420Member" order="208" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002423Member" xlink:label="S000002423Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002423Member" order="209" /></link:presentationLink><link:presentationLink xlink:role="http://xbrl.sec.gov/rr/role/FeesAndExpenses" xlink:type="extended"><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentInformationDocumentAxis" xlink:label="DocumentInformationDocumentAxis"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_Djulyoptimumpro_2790Member" xlink:label="Djulyoptimumpro_2790Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DocumentInformationDocumentAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"  use="optional" xlink:to="Djulyoptimumpro_2790Member" order="103" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_Djulyoptimumsai_2812Member" xlink:label="Djulyoptimumsai_2812Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DocumentInformationDocumentAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"  use="optional" xlink:to="Djulyoptimumsai_2812Member" order="104" /><link:loc xlink:type="locator" xlink:label="LegalEntityAxis" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/><link:loc xlink:type="locator" xlink:label="ClassAxis" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#oef_ClassAxis"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002422Member" xlink:label="S000002422Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002422Member" order="204" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002424Member" xlink:label="S000002424Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002424Member" order="205" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002425Member" xlink:label="S000002425Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002425Member" order="206" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002421Member" xlink:label="S000002421Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002421Member" order="207" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002420Member" xlink:label="S000002420Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002420Member" order="208" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002423Member" xlink:label="S000002423Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002423Member" order="209" /></link:presentationLink><link:presentationLink xlink:role="http://xbrl.sec.gov/rr/role/InvestmentRisks" xlink:type="extended"><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentInformationDocumentAxis" xlink:label="DocumentInformationDocumentAxis"/><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis"/><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#oef_RiskAxis" xlink:label="RiskAxis"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_Djulyoptimumpro_2790Member" xlink:label="Djulyoptimumpro_2790Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DocumentInformationDocumentAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"  use="optional" xlink:to="Djulyoptimumpro_2790Member" order="103" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_Djulyoptimumsai_2812Member" xlink:label="Djulyoptimumsai_2812Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DocumentInformationDocumentAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"  use="optional" xlink:to="Djulyoptimumsai_2812Member" order="104" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002422Member" xlink:label="S000002422Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002422Member" order="204" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002424Member" xlink:label="S000002424Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002424Member" order="205" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002425Member" xlink:label="S000002425Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002425Member" order="206" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002421Member" xlink:label="S000002421Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002421Member" order="207" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002420Member" xlink:label="S000002420Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002420Member" order="208" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002423Member" xlink:label="S000002423Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002423Member" order="209" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench20260706253Member" xlink:label="bench20260706253Member" /><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RiskAxis" xlink:to="bench20260706253Member" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" order="525"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench20260421206Member" xlink:label="bench20260421206Member" /><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RiskAxis" xlink:to="bench20260421206Member" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" order="526"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench20260723261Member" xlink:label="bench20260723261Member" /><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RiskAxis" xlink:to="bench20260723261Member" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" order="527"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench20260723262Member" xlink:label="bench20260723262Member" /><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RiskAxis" xlink:to="bench20260723262Member" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" order="528"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench20260723263Member" xlink:label="bench20260723263Member" /><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RiskAxis" xlink:to="bench20260723263Member" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" order="529"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench20260723264Member" xlink:label="bench20260723264Member" /><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RiskAxis" xlink:to="bench20260723264Member" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" order="530"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench20260723265Member" xlink:label="bench20260723265Member" /><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RiskAxis" xlink:to="bench20260723265Member" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" order="531"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench20260723266Member" xlink:label="bench20260723266Member" /><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RiskAxis" xlink:to="bench20260723266Member" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" order="532"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench2025112092Member" xlink:label="bench2025112092Member" /><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RiskAxis" xlink:to="bench2025112092Member" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" order="533"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench20260723267Member" xlink:label="bench20260723267Member" /><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RiskAxis" xlink:to="bench20260723267Member" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" order="534"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench20260706257Member" xlink:label="bench20260706257Member" /><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RiskAxis" xlink:to="bench20260706257Member" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" order="535"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench20260723268Member" xlink:label="bench20260723268Member" /><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RiskAxis" xlink:to="bench20260723268Member" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" order="538"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench2025112099Member" xlink:label="bench2025112099Member" /><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RiskAxis" xlink:to="bench2025112099Member" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" order="539"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench20251120118Member" xlink:label="bench20251120118Member" /><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RiskAxis" xlink:to="bench20251120118Member" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" order="541"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench20260126137Member" xlink:label="bench20260126137Member" /><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RiskAxis" xlink:to="bench20260126137Member" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" order="542"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench2025112098Member" xlink:label="bench2025112098Member" /><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RiskAxis" xlink:to="bench2025112098Member" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" order="546"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench20251120100Member" xlink:label="bench20251120100Member" /><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RiskAxis" xlink:to="bench20251120100Member" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" order="547"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench2025112091Member" xlink:label="bench2025112091Member" /><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RiskAxis" xlink:to="bench2025112091Member" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" order="550"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench2025112090Member" xlink:label="bench2025112090Member" /><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RiskAxis" xlink:to="bench2025112090Member" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" order="551"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench2025112095Member" xlink:label="bench2025112095Member" /><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RiskAxis" xlink:to="bench2025112095Member" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" order="552"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench20251120111Member" xlink:label="bench20251120111Member" /><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RiskAxis" xlink:to="bench20251120111Member" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" order="553"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench2025112094Member" xlink:label="bench2025112094Member" /><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RiskAxis" xlink:to="bench2025112094Member" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" order="554"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench2025112093Member" xlink:label="bench2025112093Member" /><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RiskAxis" xlink:to="bench2025112093Member" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" order="555"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench20260219146Member" xlink:label="bench20260219146Member" /><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RiskAxis" xlink:to="bench20260219146Member" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" order="556"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_bench2025112097Member" xlink:label="bench2025112097Member" /><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RiskAxis" xlink:to="bench2025112097Member" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" order="557"/></link:presentationLink><link:presentationLink xlink:role="http://xbrl.sec.gov/rr/role/ShareholderFeesData" xlink:type="extended"><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentInformationDocumentAxis" xlink:label="DocumentInformationDocumentAxis"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_Djulyoptimumpro_2790Member" xlink:label="Djulyoptimumpro_2790Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DocumentInformationDocumentAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"  use="optional" xlink:to="Djulyoptimumpro_2790Member" order="103" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_Djulyoptimumsai_2812Member" xlink:label="Djulyoptimumsai_2812Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DocumentInformationDocumentAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"  use="optional" xlink:to="Djulyoptimumsai_2812Member" order="104" /><link:loc xlink:type="locator" xlink:label="LegalEntityAxis" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/><link:loc xlink:type="locator" xlink:label="ClassAxis" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#oef_ClassAxis"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002422Member" xlink:label="S000002422Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002422Member" order="204" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002424Member" xlink:label="S000002424Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002424Member" order="205" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002425Member" xlink:label="S000002425Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002425Member" order="206" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002421Member" xlink:label="S000002421Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002421Member" order="207" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002420Member" xlink:label="S000002420Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002420Member" order="208" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002423Member" xlink:label="S000002423Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002423Member" order="209" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006451Member"  xlink:label="C000006451Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006451Member" order="302" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006459Member"  xlink:label="C000006459Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006459Member" order="303" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006463Member"  xlink:label="C000006463Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006463Member" order="304" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006447Member"  xlink:label="C000006447Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006447Member" order="305" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006443Member"  xlink:label="C000006443Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006443Member" order="306" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006455Member"  xlink:label="C000006455Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006455Member" order="307" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006453Member"  xlink:label="C000006453Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006453Member" order="308" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006461Member"  xlink:label="C000006461Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006461Member" order="309" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006465Member"  xlink:label="C000006465Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006465Member" order="310" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006449Member"  xlink:label="C000006449Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006449Member" order="311" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006445Member"  xlink:label="C000006445Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006445Member" order="312" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006457Member"  xlink:label="C000006457Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006457Member" order="313" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006454Member"  xlink:label="C000006454Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006454Member" order="314" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006462Member"  xlink:label="C000006462Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006462Member" order="315" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006466Member"  xlink:label="C000006466Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006466Member" order="316" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006450Member"  xlink:label="C000006450Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006450Member" order="317" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006446Member"  xlink:label="C000006446Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006446Member" order="318" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006458Member"  xlink:label="C000006458Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006458Member" order="319" /></link:presentationLink><link:presentationLink xlink:role="http://xbrl.sec.gov/rr/role/OperatingExpensesData" xlink:type="extended"><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentInformationDocumentAxis" xlink:label="DocumentInformationDocumentAxis"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_Djulyoptimumpro_2790Member" xlink:label="Djulyoptimumpro_2790Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DocumentInformationDocumentAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"  use="optional" xlink:to="Djulyoptimumpro_2790Member" order="103" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_Djulyoptimumsai_2812Member" xlink:label="Djulyoptimumsai_2812Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DocumentInformationDocumentAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"  use="optional" xlink:to="Djulyoptimumsai_2812Member" order="104" /><link:loc xlink:type="locator" xlink:label="LegalEntityAxis" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002422Member" xlink:label="S000002422Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002422Member" order="204" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002424Member" xlink:label="S000002424Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002424Member" order="205" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002425Member" xlink:label="S000002425Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002425Member" order="206" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002421Member" xlink:label="S000002421Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002421Member" order="207" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002420Member" xlink:label="S000002420Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002420Member" order="208" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002423Member" xlink:label="S000002423Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002423Member" order="209" /><link:loc xlink:type="locator" xlink:label="ClassAxis" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#oef_ClassAxis"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006451Member"  xlink:label="C000006451Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006451Member" order="302" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006459Member"  xlink:label="C000006459Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006459Member" order="303" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006463Member"  xlink:label="C000006463Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006463Member" order="304" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006447Member"  xlink:label="C000006447Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006447Member" order="305" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006443Member"  xlink:label="C000006443Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006443Member" order="306" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006455Member"  xlink:label="C000006455Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006455Member" order="307" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006453Member"  xlink:label="C000006453Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006453Member" order="308" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006461Member"  xlink:label="C000006461Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006461Member" order="309" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006465Member"  xlink:label="C000006465Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006465Member" order="310" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006449Member"  xlink:label="C000006449Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006449Member" order="311" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006445Member"  xlink:label="C000006445Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006445Member" order="312" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006457Member"  xlink:label="C000006457Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006457Member" order="313" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006454Member"  xlink:label="C000006454Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006454Member" order="314" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006462Member"  xlink:label="C000006462Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006462Member" order="315" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006466Member"  xlink:label="C000006466Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006466Member" order="316" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006450Member"  xlink:label="C000006450Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006450Member" order="317" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006446Member"  xlink:label="C000006446Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006446Member" order="318" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006458Member"  xlink:label="C000006458Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006458Member" order="319" /></link:presentationLink><link:presentationLink xlink:role="http://xbrl.sec.gov/rr/role/ExpenseExample" xlink:type="extended"><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentInformationDocumentAxis" xlink:label="DocumentInformationDocumentAxis"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_Djulyoptimumpro_2790Member" xlink:label="Djulyoptimumpro_2790Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DocumentInformationDocumentAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"  use="optional" xlink:to="Djulyoptimumpro_2790Member" order="103" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_Djulyoptimumsai_2812Member" xlink:label="Djulyoptimumsai_2812Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DocumentInformationDocumentAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"  use="optional" xlink:to="Djulyoptimumsai_2812Member" order="104" /><link:loc xlink:type="locator" xlink:label="LegalEntityAxis" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/><link:loc xlink:type="locator" xlink:label="ClassAxis" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#oef_ClassAxis"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002422Member" xlink:label="S000002422Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002422Member" order="204" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002424Member" xlink:label="S000002424Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002424Member" order="205" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002425Member" xlink:label="S000002425Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002425Member" order="206" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002421Member" xlink:label="S000002421Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002421Member" order="207" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002420Member" xlink:label="S000002420Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002420Member" order="208" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002423Member" xlink:label="S000002423Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002423Member" order="209" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006451Member"  xlink:label="C000006451Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006451Member" order="302" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006459Member"  xlink:label="C000006459Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006459Member" order="303" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006463Member"  xlink:label="C000006463Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006463Member" order="304" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006447Member"  xlink:label="C000006447Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006447Member" order="305" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006443Member"  xlink:label="C000006443Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006443Member" order="306" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006455Member"  xlink:label="C000006455Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006455Member" order="307" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006453Member"  xlink:label="C000006453Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006453Member" order="308" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006461Member"  xlink:label="C000006461Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006461Member" order="309" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006465Member"  xlink:label="C000006465Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006465Member" order="310" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006449Member"  xlink:label="C000006449Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006449Member" order="311" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006445Member"  xlink:label="C000006445Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006445Member" order="312" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006457Member"  xlink:label="C000006457Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006457Member" order="313" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006454Member"  xlink:label="C000006454Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006454Member" order="314" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006462Member"  xlink:label="C000006462Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006462Member" order="315" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006466Member"  xlink:label="C000006466Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006466Member" order="316" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006450Member"  xlink:label="C000006450Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006450Member" order="317" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006446Member"  xlink:label="C000006446Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006446Member" order="318" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006458Member"  xlink:label="C000006458Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006458Member" order="319" /></link:presentationLink><link:presentationLink xlink:role="http://xbrl.sec.gov/rr/role/ExpenseExampleNoRedemption" xlink:type="extended"><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentInformationDocumentAxis" xlink:label="DocumentInformationDocumentAxis"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_Djulyoptimumpro_2790Member" xlink:label="Djulyoptimumpro_2790Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DocumentInformationDocumentAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"  use="optional" xlink:to="Djulyoptimumpro_2790Member" order="103" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_Djulyoptimumsai_2812Member" xlink:label="Djulyoptimumsai_2812Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DocumentInformationDocumentAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"  use="optional" xlink:to="Djulyoptimumsai_2812Member" order="104" /><link:loc xlink:type="locator" xlink:label="LegalEntityAxis" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/><link:loc xlink:type="locator" xlink:label="ClassAxis" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#oef_ClassAxis"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002422Member" xlink:label="S000002422Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002422Member" order="204" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002424Member" xlink:label="S000002424Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002424Member" order="205" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002425Member" xlink:label="S000002425Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002425Member" order="206" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002421Member" xlink:label="S000002421Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002421Member" order="207" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002420Member" xlink:label="S000002420Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002420Member" order="208" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002423Member" xlink:label="S000002423Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002423Member" order="209" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006451Member"  xlink:label="C000006451Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006451Member" order="302" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006459Member"  xlink:label="C000006459Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006459Member" order="303" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006463Member"  xlink:label="C000006463Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006463Member" order="304" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006447Member"  xlink:label="C000006447Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006447Member" order="305" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006443Member"  xlink:label="C000006443Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006443Member" order="306" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006455Member"  xlink:label="C000006455Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006455Member" order="307" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006453Member"  xlink:label="C000006453Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006453Member" order="308" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006461Member"  xlink:label="C000006461Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006461Member" order="309" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006465Member"  xlink:label="C000006465Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006465Member" order="310" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006449Member"  xlink:label="C000006449Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006449Member" order="311" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006445Member"  xlink:label="C000006445Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006445Member" order="312" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006457Member"  xlink:label="C000006457Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006457Member" order="313" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006454Member"  xlink:label="C000006454Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006454Member" order="314" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006462Member"  xlink:label="C000006462Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006462Member" order="315" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006466Member"  xlink:label="C000006466Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006466Member" order="316" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006450Member"  xlink:label="C000006450Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006450Member" order="317" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006446Member"  xlink:label="C000006446Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006446Member" order="318" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006458Member"  xlink:label="C000006458Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006458Member" order="319" /></link:presentationLink><link:presentationLink xlink:role="http://xbrl.sec.gov/rr/role/BarChartData" xlink:type="extended"><link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentInformationDocumentAxis" xlink:label="DocumentInformationDocumentAxis"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_Djulyoptimumpro_2790Member" xlink:label="Djulyoptimumpro_2790Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DocumentInformationDocumentAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"  use="optional" xlink:to="Djulyoptimumpro_2790Member" order="103" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_Djulyoptimumsai_2812Member" xlink:label="Djulyoptimumsai_2812Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DocumentInformationDocumentAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"  use="optional" xlink:to="Djulyoptimumsai_2812Member" order="104" /><link:loc xlink:type="locator" xlink:label="LegalEntityAxis" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/><link:loc xlink:type="locator" xlink:label="ClassAxis" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#oef_ClassAxis"/><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002422Member" xlink:label="S000002422Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002422Member" order="204" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002424Member" xlink:label="S000002424Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002424Member" order="205" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002425Member" xlink:label="S000002425Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002425Member" order="206" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002421Member" xlink:label="S000002421Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002421Member" order="207" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002420Member" xlink:label="S000002420Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002420Member" order="208" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_S000002423Member" xlink:label="S000002423Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="S000002423Member" order="209" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006451Member"  xlink:label="C000006451Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006451Member" order="302" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006459Member"  xlink:label="C000006459Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006459Member" order="303" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006463Member"  xlink:label="C000006463Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006463Member" order="304" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006447Member"  xlink:label="C000006447Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006447Member" order="305" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006443Member"  xlink:label="C000006443Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006443Member" order="306" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006455Member"  xlink:label="C000006455Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006455Member" order="307" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006453Member"  xlink:label="C000006453Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006453Member" order="308" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006461Member"  xlink:label="C000006461Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006461Member" order="309" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006465Member"  xlink:label="C000006465Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006465Member" order="310" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006449Member"  xlink:label="C000006449Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006449Member" order="311" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006445Member"  xlink:label="C000006445Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006445Member" order="312" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006457Member"  xlink:label="C000006457Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006457Member" order="313" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006454Member"  xlink:label="C000006454Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006454Member" order="314" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006462Member"  xlink:label="C000006462Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006462Member" order="315" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006466Member"  xlink:label="C000006466Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006466Member" order="316" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006450Member"  xlink:label="C000006450Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006450Member" order="317" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006446Member"  xlink:label="C000006446Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006446Member" order="318" /><link:loc xlink:type="locator" xlink:href="macquarie-20260731.xsd#macquarie_C000006458Member"  xlink:label="C000006458Member"/><link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ClassAxis" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" use="optional" xlink:to="C000006458Member" order="319" /></link:presentationLink></link:linkbase>
