Becauseofapoweroutage，instancefailurehasoccurred.Fromwhatpointintheredologdoesrecoverybeginandwheredoesitend？（）
A. currentredologandinactiveredolog
B. checkpointpositiontoendofredolog
C. beginningofredologtoendofredolog
D. allredologsbeforethepointoflastcommit
E. beginningofredologtocheckpointposition
Anairlineisbuildingabookingsystemforitspremiumandgeneralcustomers.Thegoalistoensurepremiummembersaregivenhigheraccessprioritywhenusertrafficishigh.Whatconfigurationwillachievethisgoal？（）
A. ConfigureaWorkManagerforpremiumuserswithaMinimumThreadConstraint.
B. ConfigureaWorkManagerforpremiumuserswithahigherfair-share-request-class.
ConfigureaWorkManagerforpremiumuserswithahigherresponse-time-request-class.
D. ConfigureaWorkManagergeneraluserswithaMaximumThreadConstraint.
E. ConfigureaWorkManagerforpremiumuserswithacustomrequest-class.
理想的实现需要一定的主客观条件，在主观条件中，把理想转化为现实的重要条件是（）
A. 社会制度
B. 经济条件
C. 自身优势
D. 艰苦奋斗
下列说法与“读万卷书，行万里路”体现的哲理相同的是（）
A. 秀才不出门，全知天下事
B. 学而不思则罔，思而不学则殆
C. 读书破万卷，下笔如有神
D. 纸上得来终觉浅，绝知此事要躬行
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