全国计算机等级考试三级a类笔试试题（the national computer rank examination grade three class a written questions）

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1、全国计算机等级考试三级a类笔试试题（TheNationalComputerRankExaminationGradethreeclassawrittenquestions）NationalComputerRankExaminationthreeclassawrittenexaminationquestionsIn1999,thenationalcomputerrankexaminationthree(A)writtentestpapers(examinationtime120minutes,full100points)I.multiple-choicequestions:((1))

2、~(40),eachsubject1points,(41)~(55),eachsubject2points,atotalof70pointsEachofthefollowingA),B),C),D)fouroptions,onlyoneoptioniscorrect,pleaseputthecorrectoptionsscrawledonthecorrespondinganswercardInposition,don'tscoreonthetestpaper.(1)inthefollowingstatementonmicroprocessors,whatisincorrectis

3、that:A)microprocessorsareusuallymadeofmonolithicintegratedcircuitsB)atleastithasarithmeticandcontrolfunctions,butitdoesnothavestoragefunctionC)PentiumisthemostwidelyusedmicroprocessorinthePCD)Intelcompanyisthemostfamouscompanyintheworldtodevelopandproducemicroprocessors(2)thefollowingstatemen

4、tinthePCCPUisincorrect:A)inordertotemporarilycaptureintermediateresults,CPUcontainsdozensorevenhundredsofregistersfortemporarystorageofdataB)CPUisanindispensablecomponentofPC,andittakesonthetaskofrunningsystemsoftwareandapplicationsoftwareC)allPCmachineshavethesamemachineinstructionsastheCPUD

5、)CPUcontainsatleast1processors.Inordertoincreasethespeedofcomputation,CPUcanalsobecomposedof2,4,8ormoreprocessors(3)thelengthofthebasicaddressingunitofthemainmemoryofthemicrocomputeris:A)32bitB)lbitC)8bitD)16bit(4)2kindsoffloatingnumberswithsamelengthbutdifferentformat,assumingthattheformerha

6、slongorder,shortermantissa,shorterlatterorder,longermantissaandotheruniformrulesInthesameway,theycanindicatetherangeandaccuracyofthenumber:(A)therangesandaccuracyofthenumberstowhichbothcanbeexpressedarethesame(B)thenumberoftheformercanbelarge,buttheaccuracyislow(C)thenumberofthelatterrepresen

7、tationsislargeandofhighaccuracyD)thenumberoftheformercanbelargeandtheaccuracyishigh(5)whatiscalled"variablenumbermanipulation"meansthatanintegerischangedintoanotherintegerofthesameabsolutevaluebutoppositesign.Supposethe8representedbythecomple