现有： class TestA { public void start（） { System.out.println（"TestA"）； } } public class TestB extends TestA { public void start（） { System.out.println（"TestB"）； } public static void main （string[] args）（（（TestA）new TestB（））.

题目

现有： class TestA { public void start（） { System.out.println（"TestA"）； } } public class TestB extends TestA { public void start（） { System.out.println（"TestB"）； } public static void main （string[] args）（（（TestA）new TestB（））.start（）； ) } 运行结果是哪项？（）

A、 TeStA
B、 TeStB
C、编译失败
D、运行时抛出异常

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相似问题和答案

第1题：

Certkiller.comhasamainofficeandabranch&ens

Certkiller.comhasamainofficeandabranchoffice.Certkiller.com’snetworkconsistsofasingleActiveDirectoryforest.SomeoftheserversinthenetworkrunWindowsServer2008andtherestrunWindowsserver2003.

YouaretheadministratoratCertkiller.com.YouhaveinstalledActiveDirectoryDomainServices（ADDS）onacomputerthatrunsWindowsServer2008.Thebranchofficeislocatedinaphysicallyinsecureplace.IthasnotITpersonnelonsiteandtherearenoadministratorsoverthere.YouneedtosetupaRead-OnlyDomainController（RODC）ontheServerCoreinstallationcomputerinthebranchoffice.WhatshouldyoudotosetupRODConthecomputerinbranchoffice（）

参考答案：B

第2题：

Animportanttablespaceofyourdatabaseisdropped&ens

Animportanttablespaceofyourdatabaseisdroppedbymistake.YouusetheFlashbackDatabasefeaturetoretrievethetablespace.Youperformthefollowingstepstoretrievethetablespace：

1.YoulogontoEnterpriseManagerasSYSDBA.

2.Youselectthemaintenancescreen.

3.YouchoosePerformRecoveryoptiononthemaintenancescreen.

4.YouchooseWholeDatabaseintheObjectTypedrop-downlistPerformRecovery：Typescreen.5.YouchooseRecovertoCurrentTimefromtheOperationTypeonthePerformRecovery：Typescreen.

6.YouprovidetheHostCredentialsforadatabaseuser.onthePerformRecovery：Typescreen.

7.Youclickthecontinuebutton.

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参考答案：C

第3题：

对于技术改造项目还应分析企业现有的哪些因素()

A、现有场地的可利用性

B、现有公用设施的可利用性

C、现有技术的可利用性

D、现有设备的可回收性

E、现有辅助设施的可利用性

参考答案：ABE

第4题：

YouareresponsibleforCompany‘snetwork.You&ens

YouareresponsibleforCompany‘snetwork.

YouhavebeenassignedthetasktocreateanddeployastandardWindows2000Professionalimageto1,000newclientcomputersintheCompany‘smainoffice.YoulogontoaclientcomputernamedDuplicateTKbyusingthelocaladministratoraccount.YouinstallthreeWindows2000ProfessionalcompatiblesoftwarepackagesonDuplicateTK.Afterthesoftwareinstallationsaredoneyoucreateanimagewithathird-partyimagingsoftware.Youdeploytheimagetoatestclientcomputerandjointheclienttoadomain.Whenyoulogontothetestcomputerbyusingadomainuseraccount,thenewapplicationsdonotappearinthestartmenu.Youneedtobeabletore-createtheimagetoincludetheapplicationsintheStartmenuforallusers.

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参考答案：D

第5题：

Anadministratorhasconfiguredatwonodecluster,&ens

Anadministratorhasconfiguredatwonodecluster，Node1andNode2withtworesourcegroups，RG1andRG2.

Theresourcegroupsareconfiguredasfollows：

RG1：

ParticipatingNodes：Node1，Node2

StartupPolicy：OnlineOnHomeNodeOnly

FalloverPolicy：FalloverToNextPriorityNodeInTheListFallbackPolicyNeverFallback

RG2：

ParticipatingNodes：Node2，Node1

StartupPolicy：OnlineOnHomeNodeOnly

FalloverPolicy：FalloverToNextPriorityNodeInTheListFallbackPolicy：FallbackToHigherPriorityNodeInTheList

AnOnlineonDifferentNodesDependencyhasbeenconfiguredas：HighPriorityResourceGroups：RG2

IntermediatePriorityResourceGroup：RG1

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参考答案：C

第6题：

Whichcodefragmentswillsucceedininitializinga&ens

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CODEFRAGMENTa：int[][]tab={{0，0，0}，{0，0，0}}；

CODEFRAGMENTb：inttab[][]=newint[4][]；for（inti=0；i

CODEFRAGMENTc：inttab[][]={0，0，0，0，0，0，0，0，0，0，0，0，0，0，0，0}；

CODEFRAGMENTd：inttab[3][2]；

CODEFRAGMENTe：int[]tab[]={{0，0，0}，{0，0，0}，{0，0，0}，{0，0，0}}；

参考答案：B, E

第7题：

Companycomisplanningap5595runningAIX5L&ens

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参考答案：C

第8题：

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参考答案：B

第9题：

YournetworkcontainstwoserversnamedServer1and&ens

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