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气瓶内应有剩余压力。当气瓶无剩余压力或有不明剩余气体时,应按规定进行处理。

1、正确
2、错误
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正确答案:

正确

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Questions11to15arebasedonthefollowingpassage:

“...WearenotabouttoentertheInformationAgebutinsteadareratherwellintoit.”Presentpredictionsarethatby1990,aboutthirtymillionjobsintheUnitedStates,oraboutthirtypercentofthejobmarket,willbecomputer-related.In1980,onlytwenty-onepercentofallUnitedStateshighschoolsownedoneormorecomputersforstudentuse.(79)Inthefallof1985,anewsurveyrevealedthathalfofUnitedStatessecondaryschoolshavefifteenormorecomputersforstudentuse.Andnoweducationalexperts,administrators,andeventhegeneralpublicaredemandingthatallstudentsbecome“computerliterate(慢点…的).”“Bytheyear2000knowledgeofcomputerswillbenecessaryinovereightypercentofalloccupations.Soonthosepeoplenoteducatedincomputerusewillbecomparedtothosewhoareprintilliteratetoday.”

Whatis“computerliteracy”?Thetermitselfseemstoimplysoonextentof“knowing”aboutcomputers,butknowingwhat.Thecurrentopinionseemstobethatthisshouldincludeageneralknowledgeofwhatcomputersare,plusalittleoftheirhistoryandsomethingofhowtheyoperate.

Therefore,itisvitalthateducatorseverywheretakeacarefullooknotonlyatwhatisbeingdone,butalsoatwhatshouldbedoneinthefieldofcomputereducation.Todaymostadultsarecapableofutilisingamotorvehiclewithouttheslightestknowledgeofhowtheinternal-combustionengineworks.Weeffectivelyusealltypesofelectricalequipmentwithoutbeingabletotelltheirhistoriesortoexplainhowtheywork.(80)Businesspeopleforyearshavemadegooduseoftypewritersandaddingmachines,yetfewhaveeverknownhowtorepairthem.Why,then,attempttoteachcomputersbyteachinghoworwhytheywork?

Rather,wefirstmustconcentrateonteachingtheeffectiveuseofthecomputerasthetoolis.

“Knowinghowtouseacomputeriswhat’sgoingtobeimportant,wedon’ttalkabout‘automobileliteracy.‘Wejustgetinourcarsanddrivethem.”

11.In1990,thenumberofjobshavingnothingtodowithcomputersintheUnitedStateswillbereducedto________.

A)79millionB)30millionC)70millionD)100million(C)

12.Theexpression“Printilliterate”(Para.1,Line16)refersto________.

A)onewhohasneverlearntprintingB)onewhoisnotcomputerliterate

C)onewhohasneverlearnttoreadD)onewhoisnotabletouseatypewriter(C)

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C)theurgencyofcomputereducationD)publicinterestincomputers(C)

14.Accordingtotheauthor,theeffectivewaytospreadtheuseofcomputersistoteach____.

A)whatcomputersareB)howtousecomputers

C)wherecomputerscanbeusedD)howcomputerswork(B)

15.WhichofthefollowingstatementsisFALSE?

A)Whattoteachaboutcomputersshouldbereconsidered.

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