电子信息专英语试卷及答案

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1、三江学院高等职业技术学院201£至201、学年第二学期试卷课程名称雪业英语使用班级A09509］（考试时间120分钟）（开石闭卷口半开卷口）A卷匚^卷E］）―•二三四五总分阅卷人核查人注：所有答案都写在答题纸上，否则不得分。0

2、P一・Readingcomprehension阅读理解（共10分，每小题2分）：PassageA□RThehigherthefrequencyoftheanaloguesignal,themoreoftenitmustbesampled・However,itisusuallyadequatetosampleasignalattwiceitshighe

3、stfrequency.Eachbinarydigitusedtoshowabinaryvalueisknownasabit.TheaccuracyofconversionislimitedbythenumberofbinarybitsusedbytheADC・Iftheconversionismadeusingafour-bitADC,onlysixteendifferentbinaryvaluescanbeproduced.Thesmallestvalueis0000andthelargestis1111.Ifan8-bitADCisused,then256differ

4、entdigitalvaluescanbeproduced.Whenameasurementoftheanaloguesignaldoesnotcoincidewithoneofthesebinaryvalues,itmustberoundedupordown.1.Iftheanaloguesignalisu=sin（2007rt）,thentheadequate木纸为胶卬专用纸，范围不能超出边框，对摺纸内请勿写。老师根据题kl大项口行增删得分格。D.50kHzA.50HzB.100HzC.200Hz)differentbinary2.Iftheconversionisma

5、deusingaten-bitADC,(valuescanbeproduced.A.1024.B.256C.512D.10PassageBHaveyoueverheardofe-book?E-booksareelectronicbooks・Theyarenolargerthananordinarybook,withascreenonwhichyoucanread.Howdoesthee-bookwork?First,youcallupwebsitesonyourcomputerandselectbookthatyouwan匚Therearethousandsofbooksp

6、rovidedbydifferentwebsitesonInternet.Thendownloadthebooksyoulikeontoyoure-book.Youcandownloadabout10booksatatime・Nowyoucanjustsitbackandenjoyyourselfreading・Comparedwithordinarybooks,e-bookshavemanyadvantages・Firstofall,e-bookssavespace・Youcanputas10booksintoathingnobiggerthanapocketradioa

7、ndthencarryiteverywhere・Youcanrenewreadingmaterialsinyoure-booksasmanyasyoulike・Withthedevelopmentofe-booktechnology,probablyane-librarywillappear.Thenyoujusttakeyoure-booksthereanddownloadwhatyouwanttoread.YounolongerneedtoworryaboutwhetheryourbooksareD.50kHzA.50HzB.100HzC.200Hz)different

8、binary2.Iftheconversionismadeusingaten-bitADC,(valuescanbeproduced.A.1024.B.256C.512D.10PassageBHaveyoueverheardofe-book?E-booksareelectronicbooks・Theyarenolargerthananordinarybook,withascreenonwhichyoucanread.Howdoesthee-bookwork?First,youcallupwebsitesonyour