True/False（判断题）（10points）Directions:Intheanswersheet,writeTorFtoindicatewhetherthestatementistrueorfalse.（说明：在答题纸上填写T或F对所陈述的内容进行判断1. Mainframecomputersareusuallylesspowerfulthanminicomputers.2. Outputdevicestranslatetheprocessedinformationfromthecomputerintoaformthathumanscanunderstand.3. AGPbusisusuallyfasterthansystembus.Multiplechoice（单选题）（10points）Directions:Circletheletterofthecorrectanswerintheanswersheet.说明：在答题纸上填写代表正确答案的字母1. InWindows,whereis“RecycleBin”located?a. memoryb. harddiskrigtc. floppydiskd. cache2. Inthefollowing,whichonecanbeusedtorepresentChinesecharacters?a. ASCIIb. EBCDICc. Unicoderightd. Two'scomplementnotationCompletion（填空题）（10points）Directions:Writetheanswersintheanswersheet.Maybemorethanonewordisneeded.Y5ucananswereitherinEnglishorinChinese.（说明：将答案写在答题纸上。
答案可能不止一个单词既可用英文答，也可用中文答FormanyEmailsystems,aPOP3orPOPservehandlesincomingmail,anda（n）_SMTPserverhandlesoutgoingmail.The_controlunitintheCPUdirectsandcoordinatesintheoperationoftheentirecomputersystem.Problemssolving（问题解答）（20points）Directions:Answeringthequestionsbrieflyintheanswersheet.BothEnglishandChinesecanbeuse（.说明：在答题纸上简要回答问题，既可用英文答，也可用中文答1、SupposeweareperformingaddtioninCPU,thefollowingfigureshowsthememoryandCPUbeforeexecutionoftheprogram（假定CPU需要执行加法运算,下图列出了程序执行前CPU和内存的状态）：DataBus-oioQControlUnitR1R2R3时071072073Load200FtlLw日西1R?AddR1R2Ft?Store202R3070PC20U201202+14AddressBusExplainbrieflywhathappenswhentheCPUexecutestheinstructionstoredinmemorylocation071（简要说明当CPU执行内存地址071中的指令时CPU的具体操作）（6points）。