IntheWest,itisvery________forhighschoolstudentstohaveajobwhiletheyaregoingtoschool.Teenagersliketo________manyexpensiveactivitieslikesports,travelingandforth.Sotheyrequiremoremoneythantheirparentswouldgivethem.Toearnsomeextramoneyfortheirown________andalsomaybetosavesomemoneyforcollegeoracar,theywilltrytofindapart-timejob.Thetypesofworkthatareopentothemusually_________yardwork,babysitting,bagginginagrocerystore,workinginamovietheater,workingasasalesclerk,orworkinginafastfoodrestaurantlikeMcdonald’s.By_____intheirfreetime,thesestudentscanmakesomepocketmoney,gainsocialexperienceandgetbetterpreparedfortheirfuture.
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Incomputing,passwordsarecommonlyusedtolimit______toofficialusers.Yetthewidespreaduseofpasswordshasseriousproblems.Officeworkersnowhavetorememberan_______oftwelvesystempasswords.Intheorytheyshouldusedifferentpasswordsforeachsite,but______thesewouldbeimpossibletoremember.Somanypeopleusethesamepasswordforall.Anadditionalproblemisthatthemajorityusesimplewordssuchashello,ornamesoffamilymembers,insteadofmoresecure_______ofnumbersandletters,suchas6ANV76Y.Thispermitscomputerhackers(黑客)todownloaddictionaries,whichwillquicklyfindthewordandallowthemaccess.Therefore,itisclearthattheideaofpasswords,whichhavebeenusedas_____devicesforthousandsofyears,mayneedrethinking.
使用FORMAT命令加参数S,在硬盘上不会产生的文件是
A. COMMAND.COM
B. IO.SYS
C. AUTOEXEC.BAT
D. MSDOS.SYS
下列硬件故障诊断方法中,哪一个不可取()
A. 插拔法
B. 替换法
C. 隔离法
D. 反复开关机
下面哪个品牌不是常见声卡芯片品牌( )
A. 创新
B. 傲锐
C. Intel
D. YAMAHA