当前位置:考试网  > 试卷库  > 技能鉴定  > 其他类  > 水利设施管养人员  > 河道修防工  >  简述抢护滑坡险情的常用方法
试题预览

简述抢护滑坡险情的常用方法

查看答案
收藏
纠错
正确答案:

对于滑坡险情的常用抢护方法有:临河的前戗截渗;背河的滤水土撑、滤水后戗、滤水还坡;临背河均可使用的护脚阻滑(也称为固脚压重阻滑)、削坡减载等。

答案解析:

暂无解析

你可能感兴趣的试题

简述滤水土撑的修筑方法

论述预防或处理沉降量过大或不均匀沉降差过大的措施

简述抢护滑坡险情的主要要求

简述导致滑坡险情的原因

论述如何分析查找引起过大沉降或过大不均匀沉降的原因

热门试题 更多>
试题分类: 国家电网招聘考试
练习次数:0次
Insomecountrieswhereracialprejudiceisacute,violencehassocometobetakenforgrantedasameansofsolvingdifferences,thatitisnotevenquestioned.Therearecountrieswherethewhitemanimposeshisrulebybruteforce;therearecountrieswheretheblackmanprotestsbysettingfiretocitiesandbylootingandpillaging.Importantpeopleonbothsides,whowouldinotherrespectsappeartobereasonablemen,getupandcalmlyargueinfavorofviolence–asifitwerealegitimatesolution,likeanyother.Whatisreallyfrightening,whatreallyfillsyouwithdespair,istherealizationthatwhenitcomestothecrunch,wehavemadenoactualprogressatall.Wemaywearcollarsandtiesinsteadofwar-paint,butourinstinctsremainbasicallyunchanged.Thewholeoftherecordedhistoryofthehumanrace,thattediousdocumentationofviolence,hastaughtusabsolutelynothing.Wehavestillnotlearntthatviolenceneversolvesaproblembutmakesitmoreacute.Thesheerhorror,thebloodshed,thesufferingmeannothing.Nosolutionevercomestolightthemorningafterwhenwedismallycontemplatethesmokingruinsandwonderwhathitus.Thetrulyreasonablemenwhoknowwherethesolutionsliearefindingitharderandherdertogetahearing.Theyaredespised,mistrustedandevenpersecutedbytheirownkindbecausetheyadvocatesuchapparentlyoutrageousthingsaslawenforcement.Ifhalftheenergythatgoesintoviolentactswereputtogooduse,ifoureffortsweredirectedatcleaninguptheslumsandghettos,atimprovingliving-standardsandprovidingeducationandemploymentforall,wewouldhavegonealongwaytoarrivingatasolution.Ourstrengthissappedbyhavingtomopupthemessthatviolenceleavesinitswake.Inawell-directedeffort,itwouldnotbeimpossibletofulfilltheidealsofastablesocialprogramme.Thebenefitsthatcanbederivedfromconstructivesolutionsareeverywhereapparentintheworldaroundus.Genuineandlastingsolutionsarealwayspossible,providingweworkwithintheframeworkofthelaw.Beforewecanevenbegintocontemplatepeacefulco-existencebetweentheraces,wemustappreciateeachother'sproblems.Andtodothis,wemustlearnaboutthem:itisasimpleexerciseincommunication,inexchanginginformation."Talk,talk,talk,"theadvocatesofviolencesay,"allyoueverdoistalk,andwearenonethewiser."It'sratherlikethestoryofthefamousbarristerwhopainstakinglyexplainedhiscasetothejudge.Afterlisteningtoalengthyargumentthejudgecomplainedthatafterallthistalk,hewasnonethewiser."Possible,mylord,"thebarristerreplied,"nonethewiser,butsurelyfarbetterinformed."Knowledgeisthenecessaryprerequisitetowisdom:theknowledgethatviolencecreatestheevilsitpretendstosolve. 1.Whatisthebesttitleforthispassage? [A]AdvocatingViolence. [B]ViolenceCanDoNothingtoDiminishRacePrejudice. [C]ImportantPeopleonBothSidesSeeViolenceAsaLegitimateSolution. [D]TheInstinctsofHumanRaceAreThirstyforViolence. 2.Recordedhistoryhastaughtus [A]violenceneversolvesanything.[B]nothing.[C]thebloodshedmeansnothing.[D]everything. 3.Itcanbeinferredthattrulyreasonablemen [A]can'tgetahearing. [B]arelookeddownupon. [C]arepersecuted. [D]Havedifficultyin advocatinglawenforcement. 4."Hewasnonethewiser"means [A]hewasnotatallwiseinlistening. [B]Hewasnotatallwiserthannothingbefore. [C]Hegainsnothingafterlistening. [D]Hemakesnosenseoftheargument. 5.Accordingtheauthorthebestwaytosolveraceprejudiceis [A]lawenforcement.[B]knowledge.[C]nonviolence.[D]Moppinguptheviolentmess.
试题分类: 专业英语八级
练习次数:8次
Passage1 Questions1to5arebasedonthefollowingpassage: DoyouwanttosaywhatyouthinkinalettertothePresidentoftheUnitedStates?You’llgetareplyfromhim—writteninink,nottyped—afteronlyafewdays. ThePresidentgetsabout4,000letterseveryweek.HeanswerseveryonewhowritestohimonspecialWhitesHousepaper.Buthedoesn’tneedalotoftimeforit.Infact,heonlygives20minutesaweektolookathispersonalcorrespondence.Hehasthemostmodernsecretaryintheworldtohelphim. It’scomputer,worth£800,000,whichhasitsownroomsonthefirstflooroftheWhiteHouse.IthasabankofelectronicpenswhichwritelikethePresidentwrites,inhisfavoritelightblueink.EachletterthePresidentreceivesgetsanumber,accordingtothetypeofansweritneeds.Thepensthenwritethecorrectreplyforit,accordingtothenumber.Eachlettertakeslessthanasecondtowrite.AWhiteHouseofficialsaid,“It’snotimportantthatletterscomefromacomputer.EachlettersayswhatthePresidentwantstosay.” 1.forareplyfromthePresident. A.YouhavetowaitalongtimeB.Youonlyhavetowaitseveraldays C.YouhavetowaitatleastonemonthD.Youonlyhavetowaitafewweeks 2.ThereplyfromthePresident. A.isalwaysprintedB.isalwaystyped C.isalwayswrittenininkD.isalwayswrittenbyhimself 3.Ittakesthecomputertowritetenletters. A.nomorethantensecondsB.alittlemorethantenseconds C.lessthantensecondsD.atleastonesecond 4.Thecomputercanbedescribedas. A.expensivebutefficientB.possessingabeautifulhandwriting C.heavyandinefficientD.thePresident’smostreliablesecretary 5.Itcanbeinferredfromthepassagethat. A.thePresidentneverreadsanyletterswrittentohimbyordinarypeople B.thePresidenthiresaveryefficientsecretarytodealwithhiscorrespondence C.thePresidentdoesnotreallycareaboutthelettershereceiveseveryweek D.thePresidentisassuredthatthecomputerexpresshisviewsintheletters
试题分类: 大学英语四级
练习次数:0次
Wecanbeginourdiscussionof“populationasglobalissue”withwhatmostpersonsmeanwhentheydiscuss“thepopulationproblem”:toomanypeopleonearthandatoorapidincreaseinthenumberaddedeachyear.Thefactsarenotindispute,Itwasquiterighttoemploytheanalogythatlikeneddemographicgrowthto“along,thinpowderfusethatburnssteadilyandhaltinglyuntilitfinallyreachesthechargeandexplodes.” Tounderstandthecurrentsituation,whichischaracterizedbyrapidincreasesinpopulation,itisnecessarytounderstandthehistoryofpopulationtrends.Rapidgrowthisacomparativelyrecentphenomenon.Lookingbackatthe8,000yearsofdemographichistory,wefindthatpopulationshavebeenvirtuallystableorgrowingveryslightlyformostofhumanhistory.Formostofourancestors,lifewashard,oftennasty,andveryshort.Therewashighfertilityinmostplaces,butthiswasusuallybalancedbyhighmortality.Formostofhumanhistory,itwasseldomthecasethatoneintenpersonswouldlivepastforty,whileinfancyandchildhoodwereespeciallyriskyperiods.Often,societieswereincleardangerofextinctionbecausedeathratescouldexceedtheirbirthrates.Thus,thepopulationproblemthroughoutmostofhistorywashowtopreventextinctionofthehumanrace. Thispatternisimportanttonotice.Notonlydoesitputthecurrentproblemsofdemographicgrowthintoahistoricalperspective,butitsuggeststhatthecauseofrapidincreaseinpopulationinrecentyearsisnotasuddenenthusiasmformorechildren,butanimprovementintheconditionsthattraditionallyhavecausedhighmortality. Demographichistorycanbedividedintotwomajorperiods:atimeoflong,slowgrowthwhichextendedfromabout8,000BC.tillapproximatelyAD.1650.Inthefirstperiodofsome9600years,thepopulationincreasedfromsome8millionto500millionin1650.Between1650andthepresent,thepopulationhasincreasedfrom500milliontomorethan4billion.Anditisestimatedthatbytheyear2000therewillbe6.2billionpeoplethroughouttheworld.Onewaytoappreciatethisdramaticdifferenceinsuchabstractnumbersistoreducethetimeframetosomethingthatismoremanageable.Between8000BCand1650,anaverageofonly50,000personswasbeingaddedannuallytotheworld’spopulationeachyear.Atpresent,thisnumberisaddedeverysixhours.Theincreaseisabout80,000,000personsannually. 1.Whichofthefollowingdemographicgrowthpatternismostsuitableforthelongthinpowderfuseanalogy? A.Avirtuallystableorslightlydecreasingperiodandthenasuddenexplosionofpopulation. B.Aslowgrowthforalongtimeandthenaperiodofrapid,dramaticincrease. C.Toomanypeopleonearthandafewrapidincreaseinthenumberaddedeachyear. D.Alongperiodwhendeathratesexceedsbirthratesandthenashortperiodwithhigherfertilityandlowermortality. 2.Duringthefirstperiodofdemographichistory,societieswereoftenindangerofextinctionbecause___. A.onlyoneintenpersonscouldlivepast40. B.therewashighermortalitythanfertilityinmostplaces. C.itwastoodangeroustohavebabiesduetothepoorconditions. D.ourancestorshadlittleenthusiasmformorechildren. 3.Whichstatementistrueaboutpopulationincrease? A.Theremightbeanincreaseof2.2billionpersonsfromnowtotheyear2000. B.About50,000babiesareborneverysixhoursatpresent. C.Between8000BCandthepresent,thepopulationincreaseisabout80,000,000personseachyear. D.Thepopulationincreasedfasterbetween8000BCand1650thanbetween1650andthepresent. 4.Theauthorofthepassageintendsto___. A.warnpeopleagainstthepopulationexplosioninthenearfuture. B.comparethedemographicgrowthpatterninthepastwiththatafter1650. C.findoutthecauseforrapidincreaseinpopulationinrecentyears. D.presentusaclearandcompletepictureofthedemographicgrowth. 5.Theword“demographic”inthefirstparagraphmeans___. A.statisticsofhuman. B.surroundingsstudy. C.accumulationofhuman. D.developmentofhuman.
试题分类: 大学英语六级
练习次数:9次
PartIReadingComprehension Directions:Inthisparttherearefourpassages.Eachpassageisfollowedbyfourcomprehensionquestions.Readthepassageandanswerthequestions.ThenmarkyouranswerontheAnswerSheet. Passage1 Questions1to5arebasedonthefollowingpassage: Someyearsagothecaptainofashipwasveryinterestedinmedicine.Healwaystookmedicinebookstoseaandlikedtotalkaboutdifferentdiseases. Onedayalazysailoronhisshippretendedtobeill.Helayonhisbunk(铺)andgroanedasifhewereverysick.Thecaptaincametoseehimandwasverypleasedtohaveapatienttolookafter.Hetoldthemantorestforafewdaysandmadetheothersailorsdohiswork.Threedayslateranothersailorpretendedthathehadsomethingwrongwithhischest.Oncemorethecaptainlookedinhismedicalbooksandtold“sick”mantohavearest. Theothersailorswereveryangrybecausetheyhadmoreworktodo.Thepatientshadthebestfoodandlaughedattheirfriendswhenthecaptainwasnotlooking.Atlastthemate(船长副手)decidedtocurethe“sick”men.Hemixedupsomesoap,soot(烟灰),glue(胶水)andotherunpleasantthings.Thenheobtainedpermissionfromthecaptaintogivehismedicinetothe“sick”men.Whentheytastedthemedicine,theyreallydidfeelill.Itwassohorriblethatoneofthepatientsjumpedoutofhibunk,ranupondeskandclimbedthehighestmastontheship.Hedidnotwantanymoremedicine. Thematetoldbothofthementhattheymusttakethemedicineeveryhalfanhour,nightandday.Thissooncuredthem.Theybothsaidtheyfeltbetterandwantedtostartwordagain.Thecaptainrealizedthatthementriedtodeceivehimsohemadethemworkveryhardfortherestofthevoyage. 1.Thefirstsailorpretendedtobeillbecausehewantedto. A.testthecaptain’sknowledgeofmedicineB.befreefromwork C.havethebestfoodontheshipD.playajokeonhisfriends 2.Whenthecaptainknewasailorwasill,he. A.didn’tcaremuchB.sentforadoctor C.lookedafterhimandtoldhimtohavearestD.gavehimsomemedicine 3.Thepatientsfeltbetterquicklybecause. A.theyhadbeengivenpropermedicine B.theylearnedthatthecaptainhadfoundoutthetruth C.theywerelaughedatbytheirfriends D.themedicinethemategavewashorrible 4.Whenthecaptainknewhehadbeendeceived,he. A.toldthemnottodosoagainB.losthistemper C.madethemworkharderD.firedthem 5.Whichofthefollowingbestsummarizesthepassage? A.AsuddenCure.B.TwoPatients.C.CaptainandSailors.D.ADifficultVoyage.
试题分类: 大学英语六级
练习次数:0次
Passage3 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) 13.Thefirstparagraphismainlyabout________. A)recentpredictionsofcomputer-relatedjobsB)thewideuseofcomputersinschools C)theurgencyofcomputereducationD)publicinterestincomputers(C) 14.Accordingtotheauthor,theeffectivewaytospreadtheuseofcomputersistoteach____. A)whatcomputersareB)howtousecomputers C)wherecomputerscanbeusedD)howcomputerswork(B) 15.WhichofthefollowingstatementsisFALSE? A)Whattoteachaboutcomputersshouldbereconsidered. B)Thosewhoarenoteducatedincomputerusewillfinditdifficulttogetajob. C)HumansocietyhasalreadyenteredtheInformationAge. D)Thosewhowanttousecomputersshouldknowhowcomputersoperate.
试题分类: 成人英语三级
练习次数:0次
PartIIVocabularyandStructure Directions:Inthisparttherearefortyincompletesentences.Eachsentenceisfollowedbyfourchoices.ChoosetheonethatbestcompletesthesentenceandthenmarkyouranswerontheAnswerSheet. 21.thedifficultiesassociatedwiththeproject,we’llgoonwithit. A.GivenB.InspiteofC.ThanktoD.Becauseof 22.Itwasalmostdarkinthestreetsafewverypowerfulspotlights. A.excludingB.butforC.exceptD.exceptfor 23.today,hewouldgettherebyFriday. A.WouldheleaveB.Ifheleaves C.WasheleavingD.Werehetoleave 24.Hegavemesomeveryadviceonbuyingahouse. A.preciousB.expensiveC.wealthyD.dear 25.Hisgoalisnottobecomeasportsman,achampioninacertainfield. A.butratherbecameB.butrathertobecome C.butratherbecomingD.butrathertobecoming 26.Ijustmetheronthewayhomefromthebookstore. A.onpurposeB.byaccidentC.inaccidentD.incase 27.Idon’tknowabouthim,commentonhimbehindhisback. A.letaloneB.letgoC.leavealoneD.takeleave 28.Mytransistorradioisoutoforder.It. A.needtoberepairedB.needrepairing C.needsrepairingD.needstorepair 29.Noonecouldtellusanythingaboutthestranger. A.consciousB.mysteriousC.seriousD.previous 30.Maryallfoolishcommentsandkeptonworking. A.excludedB.ignoredC.deniedD.discharged 31.Iagreewithhim,butnotentirely. A.untilacertainpointB.tosomepoint C.tosomeextentD.untilacertainextent 32.Peopleinsomepartsoftheworldoftentaketheirwaterfor.theyuseasmuchwaterastheywish. A.grantedB.sureC.certainD.pleasure 33.Color-blindpeopleoftenfinditdifficulttobetweenblueandgreen. A.separateB.compareC.contrastD.distinguish 34.Thousandsofpeopleonthecitytowelcomethevisitingguests. A.turnedoffB.turnedupC.turnedoutD.turnedover 35.Themountainplaceisbeautiful,buttheworkingconditions,it’sterrible. A.whenmentionedB.whenitcomesto C.whenitissaidD.whenitdiesto 36.Areyouspendingmoremoneyonthespaceprogram? A.infavorofB.byfavorofC.infavortoD.outoffavor 37.Intheofmyparents,standardsofeducationinthepublicschoolareactuallyfalling. A.ideaB.thoughtC.opinionD.principle 38.fromspace,ourearth,withwatercovering70%ofitssurface,appearsasa“blueplanet”. A.SeeingB.TobeseenC.SeenD.havingseen 39.Thisyear’stotaloutputvalueofindustryandagriculturewillincrease5percentoverlastyears. A.byB.toC.ofD.with 40.Maryisthetopstudentintheclass.Shestudiesharder. A.thananystudentB.thanallthestudents C.thananyotherstudentD.thansomeotherstudent 41.Manypeoplehaveappliedfortheposition. A.emptyB.bareC.vacantD.blank 42.Mynewshoescostme50yuan(RMB).ThepricewasthatthelastpairIboughtamonthago. A.twotimemorethanB.twiceasmuchas C.astwiceD.asmuchastwice 43.Almosteveryonefailedonthefirstday. A.passhisdriver’stestB.tohavepassedhisdriver’stest C.topasshisdriver’stestD.passinghisdriver’stest 44.Overthetraditionalfestivalpeoplevisiteachotherandgreetings. A.exchangeB.wishC.congratulateD.present 45.Itwasbecausehewastiredoutthathefellasleepstandingup. A.publiclyB.openlyC.speciallyD.obviously 46.Theyoungmanwasaccusedoftheladyofhermoney. A.stealingB.robbingC.takingD.grasping 47.NomatterwhereourPartyneedsus,wewillhercall. A.giveanswerforB.respondto C.haveresponsetoD.answerto 48.Itisastonishingthatapersonofyourintelligencebecheatedsoeasily. A.couldB.shouldC.mightD.would 49.Wewerecompletelywhenwefinallyreachedthedestination. A.wornoffB.worndownC.wornoutD.wornaway 50.Manythingsimpossibleinthepastarecommontoday. A.consideredB.toconsiderC.consideringD.tobeconsidered 51.Notuntilmanyyearslaterknown. A.wasthewholetruthbecomeB.didthewholetruthbecome C.thewholetruthbecameD.thewholetruthhadbecame 52.Wedidn’tknowhistelephonenumber,otherwisewehim. A.wouldtelephoneB.wouldhavetelephoned C.hadtelephonedD.musthavetelephoned 53.Thereisnopointwithhim,sincehehasalreadymadeuphismind. A.argueB.toargueC.inarguingD.ofarguing 54.Iappreciatethatletterforme. A.youtowriteB.yourwritingC.youwriteD.thatyouwriting 55.I’dliketoaspecialseatfortheconnectofMay5. A.serveB.reserveC.preserveD.conserve 56.thatsoniswellagain,younolongerhaveanythingtoworryabout. A.SinceB.NowC.WhenD.After 57.Generallyspeaking,allkindsofmaterialswillexpandwhenheatedbutwillwhencooled. A.contrastB.contractC.surviveD.return 58.Youwon’tknowifitfitsyouuntilyouiton. A.willtryB.aretryingC.aretotryD.havetried 59.Afteralleffortsinvain,hehadtoaccepttheresult. A.regularlyB.shallowlyC.physicallyD.painfully 60.Therestofhislifeistothecauseofinternationalexchangesofvisitingscholars. A.addedB.putC.savedD.committed
试题分类: 大学英语四级
练习次数:0次
Passage2 Questions6to10arebasedonthefollowingpassage: Whenaluminumwasfirstproducedaboutahundredandfiftyyearsago,itwassodifficulttoseparateformtheoresinwhichitwasfoundthatitspricewashigherthanthatofgold.Thepriceremainedhighuntilanewprocesswasdiscoveredforrefiningthemetalwiththeaidofelectricityapproximatelythreequartersofacenturylater.Thenewmethodwassomuchcheaperthataluminumbecausepracticalformanypurposes,oneofwhichwasmakingpotsandpans. Aluminumislightweight,rustproofandeasilyshapedintodifferentforms.Bymixingitwithothermetals,scientistshavebeenabletoproduceavarietyofalloys,someofwhichhavethestrengthofsteelbutweighonlyonethirdasmuch. Today,theusesofaluminumareinnumerable.Perhapsitsmostimportantuseisintransportation.Aluminumisfoundintheengineofautomobiles,inthehullsofboats.Itisalsousedinmanypartsofairplanes.Infact,thehuge“airbus”planeswouldprobablyneverhavebeenproducedifaluminumdidnotexist.Bymakingvehicleslighterinweightaluminumhasgreatlyreducedtheamountoffuelneededtomovethem,Aluminumisalsobeingusedextensivelyinthebuildingindustryinsomecountries. Sincealuminumissuchaversatile(多用的)metal,itisfortunatethatbauxite(铝土矿),whichisoneofitschiefsources,isalsooneoftheearth’smostplentifulsubstances.Asthesourceofaluminumisalmostinexhaustible,wecanexpectthatmoreandmoreuseswillbefoundforthisversatilemetal. 6.Thepriceofaluminumwassharplyreducedwhenpeoplediscoveredanewrefiningprocesswiththeaidof. A.windB.solarenergyC.hydraulicpowerD.electricity 7.Aluminumis. A.lightweight,rustproofbutnoteasilyshapedintodifferentforms B.heavyweight,rustproofandeasilyshapedintodifferentforms C.lightweight,rustproofandeasilyshapedintodifferentforms D.lightweightandeasilyshapedintodifferentformsbutitiseasytobecomerusty 8.WhichofthefollowingisNOTtrue? A.Aluminumiswidelyusedintransportation. B.Aluminumisalsousedinmanypartsofairplanes. C.Aluminumisbeingusedextensivelyinthebuildingindustry. D.Aluminumisnotusedinitspureform. 9.Aluminumisfoundonearthmostlyintheformof. A.puremetalB.bauxiteC.goldD.liquid 10.Whatisthepassagetalkingabout? A.Thefeaturesofaluminumanditsfunctions.B.Theprocessofaluminum. C.Thediscoveryofaluminum.D.Thepromisingfutureofaluminum.
试题分类: 大学英语四级
练习次数:3次
扫一扫,手机做题