常用焊缝无损检测方法中有色金属制压力容器对接接头应尽量采用()。
A.射线检测
B.磁粉检测
C.超声检测
D.局部超声检测
第1题
A.double getSalesAmount() { return 1230.45; }
B.public double getSalesAmount() { return 1230.45; }
C.private double getSalesAmount() { return 1230.45; }
D.protected double getSalesAmount() { return 1230.45; }
第2题
A.Tolistallbackupsthatwerenolongeravailableforrestoreoperations
B.TolistallbackupsthathadagedbeyondtheRMANretentioncriteria
C.Tolistallbackupsetpieceslistedincontrol-fileorrecovery-catalogmetadatathatarenotonthebackupmedia
D.Tolistalldatafilesthatarenolongerpartofthedatabaseandthusdonotneedtobebackedup
E.Tolistallarchivedredologsthatarenolongerneededforanydatabaserecovery
第3题
A.ConfigureJavaPooltocachethejavaobjects.
B.ConfigureStreamsPooltoenableparallelprocessing.
C.IncreaseSharedPoolsizetocachemorePL/SQLobjects.
D.IncreaseDatabaseBufferCachesizetoincreasecachehits.
E.ConfigureLargePooltobeusedbyRMANandsharedserver.
F.IncreasethetotalSystemGlobalArea(SGA)sizetoincreasememoryhits.
第4题
A.Thiscommandwouldresultinanerrorbecausethediskgroupisnotempty.
B.Thecommandwoulddropthediskgroup,ignoringtheEXCLUDINGCONTENTSoption.
C.ThecommandwouldresultinthediskgroupbeingmarkedasINVALIDbecauseitcannotbedropped.
D.Thecommandwouldresultinthecontentsbeingmovedtotheparentdiskgroupanddroppingofthediskgroup.
E.Thecommandwoulddistributethecontentsofthespecifieddiskgroupamongallotherdiskgroupsandthendropthespecifieddiskgroup.
第5题
A. The results are not sorted.
B. The results are sorted numerically.
C. The results are sorted alphabetically.
D. The results are sorted numerically and then alphabetically.
第6题
A.Listsalldatafilescreatedinthelastthreedaysthatarenotbackedup.
B.Listsalldatafilesnotrecoverablebasedonthecurrentretentioncriteria.
C.Listsalldatafilesnotbackedupinthelastthreedays.Thedatafileisnotrecoverable.
D.Listsalldatafilesthatneedtobebackedupduetounrecoverableoperations.
E.Listsalldatafilesnotbackedupinthelastthreedays.Itdoesnotimplythatthedatafileisnotrecoverable.
第7题
A.Createaviewonthetable.
B.Createanindexonthetable.
C.Createasynonymonthetable.
D.Addavirtualcolumntothetable.
E.UpdatethetableusingtheUPDATEstatement.
F.DeleterowsinthetableusingtheDELETEcommand
第8题
A. a schema object
B. a subquery that can contain an ORDER BY clause
C. another name for a view that contains group functions
D. a subquery that is part of the FROM clause of another query
第9题
A.Eachsegmentcontainsoneormoreextents.
B.Multipletablespacescansharesingledatafile.
C.AdatablockisthesmallestunitofI/Ofordatafiles.
D.Itispossibletohavetablespacesofdifferentblocksizesinadatabase.
E.EachdatablockinthedatabasealwayscorrespondstooneOSblock.
第10题
A.Themy_data_01.dbfdatafileiscorruptedandneedstoberestored.
B.Themy_data_01.dbfdatafilehasnotyetbeenbackedup.Thisreportdoesnotimplythatthedatainthedatafilecannotberecovered.
C.Themy_data_01.dbfdatafilehasnotyetbeenbackedup.Thisreportimpliesthatthedatainthedatafilecannotberecovered.
D.Themy_data_01.dbfdatafilenolongermeetstheretentioncriteriaforbackups.
E.Datafile5ismissing.
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