工业水处理相关知识英文选择题试卷及答案

第页工业水处理相关知识英文选择题试卷及答案汇总1.AA001Therearemanykindsofwaterresources,butnotallwaterbodiesaresuitableaswatersupplysource,suchasseawaterisnotsuitableaswatersupplysourcebecauseofitshighcontentanddifficulttreatment.A、hardnessB、AcidityC、SaltD、turbidity【正确答案】：C2.AA001Theidealsemi-permeablemembranedoesnotallow()insolutiontopassthrough.A、soluteB、solventC、saltsD、Polymers【正确答案】：A3.AA001Oncehydrochloricacidissplashedoneyesorskin,rinseimmediatelywithplentyofrunningwaterandrinsewith()solution.A、2%sodiumbicarbonateB、1%aceticacidC、2%boraxD、0.5%sodiumhydroxide【正确答案】：A4.AA001Accordingtointernationalregulations,thevoltagebelow()Vdoesnotrequireconsiderationoftheriskofelectricshock.A、36B、65C、25D、110【正确答案】：C5.AA001Theunitofscatteringturbidityisdenotedby().A、JTUB、FUC、NUD、FTU【正确答案】：D6.AA001Ofthefollowingstatementsthatwillnotcausedisqualificationofdissolvedoxygeninthefeedwateris().A、thedeaeratoroperatingconditionispoorB、deaeratorinternaldevicedefectsC、TheamountofammoniaaddedtothewatersupplyistoohighD、thedoseofhydrazinetreatmentisnotenough【正确答案】：C7.AA001Whenthemediumpressurerisestothespecifiedpressurevalue,thevalvediscwillautomaticallyopen,themediumquicklyejected,atthistimethepressureatthevalveinletiscalled().A、openingpressureB、DischargepressureC、workingpressureD、Turnoffstress【正确答案】：A8.AA001Pedestriansinthefactoryshouldpayattentiontothewinddirectionandwindforcetopreventbeingharmedbytoxicgasesintheeventofanaccident.Incaseofanemergency,theyshoulddetour,stop,or().A、WalkwiththewindB、WalkthroughC、WalkagainstthewindD、Walkquickly【正确答案】：C9.AA001IntheRh-typestronglyacidicionexchangecolumn,whenthewatercontainingCa2+ispassedfromtoptobottom,theCa2+concentrationinthewaterbecomeslowerandlowerintheexchangezone().A、SmallB、LargeC、unchangedD、notsure【正确答案】：A10.AA001Forboilerswithpressuregreaterthan5.9MPa,theirelectricalconductivity(afterhydrogenionexchange)shouldgenerallynotbehigherthan()μScm.A、0.3B、1.0C、3.0D、10【正确答案】：A11.AA001Whenthealkalinityofnaturalwaterisgreaterthanthehardness,theaveragewaterqualityoftheeffluentduringthewholecycleofthehydrogentypestronglyacidiccationexchangecolumnis().A、acidityB、NeutralC、AlkalineD、Basicandthenacidic【正确答案】：C12.AA001Take1.0μgmlsilicaworkingliquid1.0mlanddiluteitto10mlwithhighpuritysilicon-freewater,thensilicaconcentrationis()μgl.A、100B、50C、20D、10【正确答案】：A13.AA001Whenengagingincomputer,weldingandcuttingoperations,lightorothertypesofradiationoperations,itisnecessarytowearspecialized().A、ProtectivecoverB、ProtectivenetC、ProtectivegogglesD、Protectiveclothing【正确答案】：C14.AA001Theexchangegroupof001×7hydrogen-typeresinis().A、-SO3HB、-COOHC、=NHOHD、Quaternaryammoniumgroup【正确答案】：A15.AA001Theincorrectprincipleforselectingfiltermediaforfiltrationequipmentis().A、SufficientmechanicalstrengthB、SufficientchemicalstabilityC、HightechnologycontentandexpensivepriceD、Uniformparticlesize,appropriategrainsize【正确答案】：C16.AA001Theionexchangeequilibriumistheequilibriumbetweentheionexchangereactionbetweenthesolidresinphaseandtheliquidphaseintheionexchangesystemunderacertain()andafteracertaintime.A、pressureB、TemperatureC、ResindensityD、Weight【正确答案】：B17.AA001Thetypeoffluidflowisjudgedby().A、FlowvelocityB、ViscosityC、DensityD、Reynoldsnumber【正确答案】：D18.AA001ThecuringtimeofepoxyfuranFRPliningatroomtemperatureshouldnotbelessthan()days.A、15B、20C、25D、30【正确答案】：D19.AA001Alow-pressurevalvereferstoavalvewithanominalpressureof()MPa.A、≤1.0B、≤1.6C、1.0~3.0D、1.0~5.0【正确答案】：B20.AA001Acountercurrentfixedbedcomparedtoadown-flowfixedbed().A、theformeroutletwaterqualityispoor,theamountofregenerantislargeB、thelattereffluentqualityispoor,theamountofregenerantislargeC、theformereffluentqualityisgood,theamountofregenerantislargeD、thelattereffluentwaterqualityispoor,theamountofregenerantissmall【正确答案】：B21.AA001Themostcorecomponentofthecomputerhardwaresystemis().A、InternalmemoryB、HostCPUD、Motherboard【正确答案】：C22.AA001Whatiswrongwiththestatementaboutthewatercushioninsidethefloatingbedis().A、BufferheightasAchangeinthevolumeoftheionexchangeresinbedB、whenrunning,ensurethatthewaterflowisevenlydistributedupwardC、ensurethattheregenerationliquidisevenlydistributedduringregenerationD、whenrunning,thewatercushionisintheupperpartofthebed;Regeneration,inthelowerpartofthebed【正确答案】：D23.AA001WhenelectrodeconstantQ=(),theconductivityisequaltotheconductivity.A、0.1B、1C、10D、100【正确答案】：B24.AA001Amongthefollowingoptions,()representstheanti-knockindexofgasolinewhenitburnsinagasolineengine.A、IsooctanevalueB、n-HeptanevalueC、OctanevalueD、Cetanevalue【正确答案】：C25.AA001Incondensatetreatment,theH-OHmixedbedeffluentcontainsresin,whichisusuallytreatedby().A、reducethewaterflowrateB、increasetheregenerativedoseC、repairthedrainagedeviceD、backwashtheresinintheexchanger【正确答案】：C26.AA001The()ofthereverseosmosismembraneisincontactwiththewatersupplytoachievethedesaltingeffect.A、denselayerB、porouslayerC、supportlayerD、gridlayer【正确答案】：A27.AA001Reverseosmosisincreasesthesaltcontentofthefeedwater,otherthingsbeingequal,thefollowingstatementiscorrect().A、thewaterfluxincreases,thesaltpenetrationdecreasesB、Asthewaterfluxdecreases,sodoesthesaltpermeabilityC、Asthewaterfluxincreases,sodoesthesalttransmittanceD、waterfluxdecreases,saltpermeabilityincreases【正确答案】：D28.AA001Whenthetemperatureisconstant,theresistanceofaconductorisdeterminedby().A、R=LSB、R=ρ⋅L⋅SC、R=ρ(L⋅S)D、R=ρLS【正确答案】：D29.AA001Thefundamentalreasonforthegenerationofflowresistanceis().A、FluidhasviscosityB、RoughnessofthepipewallC、FlowratesizeD、Changeinflowdirection【正确答案】：A30.AA001Theoptionthatgenerallydoesnotcauseenvironmentalpollutionis().A、IncompletechemicalreactionsB、CompletechemicalreactionsC、EquipmentleakageD、Sidereactionsinchemicalreactions【正确答案】：B31.AA001Accordingtotherequirementsofthe"GBT12145-1999WaterandSteamQualityforThermalPowerUnitsandSteamPowerEquipment,"aftercondensatewateristreatedbyahydrogen-typemixedbed,thesilicaindexis()μgL.A、≤10B、≤15C、≤20^xD、≤30【正确答案】：B32.AA001Themainpurposeofdesigningbypassvalveswithlargerdiametersis().A、improvethethroughflowrateB、reducethewaterpressuredifferenceC、reducetheflowrateD、repairanduse【正确答案】：B33.AA001Ifthedesignflowofawaterplantisknowntobe1m3sandtheresidencetimeofitssedimentationtankis1.5hours,theeffectivevolumeofthesedimentationtankshouldbe()m3.A、2400B、3600C、5400D、8640【正确答案】：C34.AA001Theequipmentintegrityratereferstothepercentageratioof().A、ThenumberofintactequipmentinusetothetotalnumberofequipmentinuseB、ThenumberofintactequipmentinusetothetotalnumberofallequipmentC、ThenumberofallintactequipmenttothetotalnumberofallequipmentD、Thenumberofallintactequipmenttothetotalnumberofequipmentinuse【正确答案】：A35.AA001Fordrumboilerswithpressuregreaterthan5.9MPa,thecontentofsodiumionsinthesaturatedsteamshouldgenerallynotbehigherthan()μgkg.A、100B、50C、20D、10【正确答案】：D36.AA001Accordingtotherequirementsofthe"GBT12145-1999WaterandSteamQualityforThermalPowerUnitsandSteamPowerEquipment,"aftercondensatewateristreatedbyahydrogen-typemixedbed,theconductivity(at25℃)standardindexis()μScm.A、≤0B、≤0.1C、≤0.2D、≤0.3【正确答案】：C37.AA001ThereisacloserelationshipbetweenfeedwaterpHvalueandthereactionspeedofhydrazinedeoxygenation.ThereactionspeedisthegreatestwhenthepHvalueisintherangeof().A、4~6B、6~8C、9~11D、Greaterthan11【正确答案】：C38.AA001Inthefireanalysis,whenthelowerexplosivelimitofcombustiblegasisgreaterthan4%,theanalysisdetectiondata()%isqualified.A、<4.0B、<2.0C、<1.0D、<0.5【正确答案】：D39.AA001Inthecombinedwatertreatmentofsofteninganddealkalization,themoreidealcombinedionexchangesystemis().A、weaklyacidichydrogen-sodiumseriesB、strongacidichydrogen-sodiumseriesC、doublesodiumseriesD、single-stagesodiumandacidtreatment【正确答案】：A40.AA001Thevastmajorityofpoisonsthatcausechronicpoisoninghave().AccumulativeeffectB、HightoxicityC、LowtoxicityD、Moderatetoxicity【正确答案】：A41.AA001Comparedtoaluminumsalts,thecharacteristicsofferricchlorideasacoagulantare().A、WeakcorrosivenessB、SolidisnoteasilyhygroscopicC、Goodeffectontreatinglow-temperatureandlow-turbiditywaterDifficulttodissolve【正确答案】：C42.AA001TheselectivitycoefficientKHLi=0.8indicates().A、TheselectivityofionexchangeresintoLi+islessthanthattoH+,whichiscalledunfavorablebalanceB、theselectivityofionexchangeresinforLi+isgreaterthantheselectivityforH+,calledfavorablebalanceC、theselectivityofionexchangeresintoLi+isequaltotheselectivityofH+,calledlinebalanceD、theselectivityofionexchangeresinforLi+islessthanthatforH+,whichiscalledfavorablebalance【正确答案】：A43.AA001Intheelectronicsindustry,thecleaningofpartsandtheconfigurationofliquidmedicineneed().A、clarifyingwaterB、TapwaterC、softenedwaterD、Purewater【正确答案】：D44.AA001Inthefiltrationprocess,thegreaterthepenetrationdepthofsuspendedparticles,the()theturbidityoftheinfluentandthelargerthefiltermaterialparticlesize.A、GreatertheturbidityoftheinfluentandthelargerthefiltermaterialparticlesizeB、GreatertheturbidityoftheinfluentandthesmallerthefiltermaterialparticlesizeC、LowertheturbidityoftheinfluentandthelargerthefiltermaterialparticlesizeD、Lowertheturbidityoftheinfluentandthesmallerthefiltermaterialparticlesize【正确答案】：A45.AA001Thereisno()deviceinsidetheparallelflowfixedbed.A、waterdistributionB、watercollectionC、regeneratedliquiddistributionD、middledrainage【正确答案】：D46.AA001Workersinflammableandexplosivepositionsshouldwear()workclothes.AcrylicB、Anti-staticC、PolyesterD、Impermeable【正确答案】：B47.AA001Theoptionthatisnotamainrouteofpollutioninthepetrochemicalindustryis().A、EmissionsfromtheprocessB、DrippingandleakagefromequipmentandpipelinesC、TransportationoffinishedproductsDisposalofcatalystsandadditives【正确答案】：C48.AA001Whenperformingweldingoperationsonstoragetanksthathavepreviouslycontainedacids,ammoniawater,andoil,theincorrectstatementis().A、Thetankshouldbewashedwithhotalkaliwater.B、Theirresiduescandecomposeathightemperaturesandformcombustibleexplosivemixtureswiththeairinthetank.C、Weldingcanbedonedirectly.D、Weldingcannotbedoneifnotcleanedproperly.【正确答案】：C49.AA001Amongthefollowingtypesofseals,()isacontact-typedynamicseal.A、MechanicalsealB、LabyrinthsealC、O-ringsealD、Liquidseal【正确答案】：A50.AA001Theproductmodelnumberofthegeltypeionexchangeresinismainlycomposedofthreedigits,theseconddigitofwhichindicates().A、thedegreeofcrosslinkingB、serialnumberC、skeletonnumberD、activegroupcode【正确答案】：C51.AA001Whenadrumboilerwithsinglestageevaporationandsteampressureof5.9~12.6MPaistreatedwithphosphate,thecontentofphosphateinthefurnacewatershouldbecontrolledat()mgL.A、5~10B、2to10C、2to15D、1~2【正确答案】：B52.AA001Intheacidtankoverhaul,whentheconstructionenvironmenttemperatureofthebrickandplateliningprojectislowerthan()℃.heatingandinsulationmeasuresshouldbetaken.A、0B、5C、10D、20【正确答案】：C53.AA001Thelevelscorrespondingtothevocationalqualificationcertificatesof初级、中级、高级、技师、高级技师are()respectively.A、Five,four,three,two,oneB、One,two,three,four,fiveC、Two,three,four,five,sixD、Six,five,four,three,two【正确答案】：A54.AA001Inthefeedwatertreatmentofreverseosmosis,theitemstobeanalyzedinordertomonitortheeffectofremovingmicroorganismsfromthewaterare().A、SDIB、PHC、BacteriacountD、COD【正确答案】：C55.AA001TheresindenotedbyR≡NHOH,belongingto()ionexchangeresin.A、strongacidB、weaklyacidicC、StrongalkalineD、Weaklyalkaline【正确答案】：D56.AA001Asignificantcharacteristicofpetrochemicalproductionisthecomplexityoftheprocessandthestrictrequirementsfor().A、ProductsB、RawmaterialsC、OperationD、Temperature【正确答案】：C57.AA001Inreverseosmosiswatersupplytreatment,therequirementrangeofrolltypecompositemembraneforwatersupplyPHvalueis().A、4~6B、2to11C、0to7D、7to8【正确答案】：B58.AA001Inthevalvemodelrepresentationmethod,the()elementisgenerallynotincluded.A、DrivemethodB、ConnectionformC、SealingsurfacematerialD、Mediumtype【正确答案】：D59.AA001Petroleumismainlycomposedofvariousdifferenttypesofhydrocarbons,anditsmaintypesare().Alkanes,cycloalkanes,fattyhydrocarbonsB、Alkanes,cycloalkanes,aromatichydrocarbonsC、Alkanes,aromatichydrocarbons,fattyhydrocarbonsD、Fattyhydrocarbons,cycloalkanes,aromatichydrocarbons【正确答案】：B60.AA001Themoisturecontentofion-exchangeresinsisgenerallybetween().A、20%to40%B、30to50percentC、40to60percentD、60%to80%【正确答案】：C61.AA001Anionexchangeresinscanbedividedintostrongbaseresinsandweakbaseresinsdependingon().A、reactionspeedB、InterchangeabilityC、ionizationdegreeD、PHvalue【正确答案】：C62.AA001Acryliccarboxylicacidresinisa()exchanger.A、StronglyacidicB、WeaklyacidicC、AmphotericD、Weaklybasic【正确答案】：B63.AA001Themembranedegradationofreverseosmosisisduetothehydrolysisofthemembrane,oxidationaswellas()causes.A、mechanicaldamageB、scalingC、colloidalcontaminationD、organicmatter【正确答案】：A64.AA001Amongthefollowingsubstances,eachtaken10G,theonecontainingthemostatomsis().A、SodiumB、MagnesiumC、AluminumD、Copper【正确答案】：A65.AA001ThedeterminationofhardnessrequiresasolutionPHof().A、7.0B、5.6C、10.00.1D、12.0【正确答案】：C66.AA001ThethreemostabundantelementsintheEarth'scrustare().A、C，H，OB、N，O，SC、O，Si，AlD、Fe，Al,Cu【正确答案】：C67.AA001Thefollowingofpermanenthardnessare().A、Ca（HCO3）2B、Mg（HCO3）2C、Na2CO3D、CaSO4【正确答案】：D68.AA001Inthefollowingstatement,()willnotcausetheeffluentconductivityofH-OHmixedbedtoexceedthestandard.A、H-OHmixedbedoutletvalveleakageB、H-OHmixingbedfailureC、H-OHmixedbeddoesnotworkproperlyD、H-OHmixedbedbackwashinginletvalveleakage【正确答案】：A69.AA001Acrylicseriescarboxylicacidresinsare()exchangers.A、strongacidB、WeaklyacidicC、AmphotericD、Weaklyalkaline【正确答案】：B70.AA001Inthecondensatefinetreatmentprocess,the()processisgenerallynotincluded.A、CoagulationB、FiltrationC、Oilremoval,ironremovalD、Saltremoval【正确答案】：A71.AA001Thedissolvedoxygencorrosioninthefeedwatersystemisanelectrochemicalcorrosion,where()formtwoelectrodes,composingacorrosioncell.A、IronandhydrogenB、CarbonandoxygenC、IronandcarbonD、Ironandoxygen【正确答案】：D72.AA001Diaphragmmeteringpumpintheunittimethereciprocatingnumberofdiaphragmiscertain,thenthepumpflowisproportionalto().A、strokesizeandvolumeB、outletpressureC、thequalityofdiaphragmD、liquidtemperature【正确答案】：A73.AA001Themembraneformusedforreverseosmosisroll-typemembraneelementsis().A、flatfilmB、FiberbundleC、TubularmembraneD、plateandframefilm【正确答案】：A74.AA001Amongthefollowinghalogens,theonethatdoesnothavereducingpropertiesis().A、F2B、Cl2C、Br₂D、I₂【正确答案】：A75.AA001Whenpurewaterandsaltwaterareseparatedbyanidealsemi-permeablemembrane,pressureisappliedtothesaltwatersidetoacertainvalue,theflowrateofwaterthroughthemembrane(),thispressureiscalledosmoticpressure.A、decreaseto0B、StarttoriseC、StarttofallD、nochange【正确答案】：A76.AA001Whenthecentralizedsamplingdeviceisshutdown,theglasselectrodeoftheonlineinstrumentshouldbe().A、DriedandplacedB、ImmersedinwaterC、RemovedandplacedDriedandplaced【正确答案】：B77.AA001Lubricantsinliquidformarecalledlubeoilsandareusuallyclassifiedby().A、flashpointB、viscosityC、FreezingpointDensity【正确答案】：B78.AA001Toextendtheuseoftwogalvanizedsteelpipesthatare6mlongandhaveadiameterof25mm,a()connectionshouldbeused.A、MalethreadB、FemalethreadC、ReducingfittingD、Elbow【正确答案】：B79.AA001Thefollowingstatementsthatdonotcausehighfeedwaterhardnessare().A、ThefurnacewateriscloudyB、CondenserleakageC、hydrophobichardnessD、demineralizedwaterhashardness【正确答案】：A80.AA001Thefollowingfactors,()willnotaffectthepumppan.A、replacethenewdiscB、bearingdamageC、thepumpshaftisbentD、Waterinletvalveisclosed【正确答案】：D81.AA001Whentheoutletpressureishigherthantheinlet,theflapofthelift-typecheckvalvefollowstheverticalcenterlineofthebody().A、dropcloseB、risetoopenC、opendownD、Risetoclose【正确答案】：A82.AA001Therearethreestagesofresinlayerchangeintheionexchangeprocess,theonedescribedincorrectlybelowis().A、theformationstageoftheexchangebandB、theexchangestageoftheexchangebeltC、themovingstageoftheswitchingtapeD、thevanishingstageoftheswitchingband【正确答案】：B83.AA001Amongthefollowingconceptsofvoltage,theincorrectstatementis().A、ThepotentialdifferencebetweentwopointsinacircuitiscalledvoltageB、CurrentistheconditionforgeneratingvoltageC、VoltagecanberegardedasaphysicalquantitydescribingtheworkdonebytheelectricfieldforceD、Thehigherthevoltage,themoreworkisdonetomoveaunitcharge【正确答案】：B84.AA001Whendeterminingtheoctanevalueofautomotivegasoline,oneofthestandardsubstanceschosenis(),withanoctanevalueof100,whichhasgoodanti-knockproperties.A、n-OctaneB、IsooctaneC、n-HexaneD、n-Heptane【正确答案】：B85.AA001Thecompositionofionexchangeresinhas()threeparts.A、monomer,crosslinkingagent,exchangegroupB、monomer,exchangegroup,poreC、porechannel,capillarychannel,monomerD、crosslinkingagent,counterion,fixedion【正确答案】：A86.AA001Thestatusofthesuctionvalve()whenthediaphragmmeteringpumpisdischargingliquid.A、openB、CloseC、TurnitoffandthenonD、Onbeforeoff【正确答案】：B87.AA001Accordingtotheprincipleofelectricneutralityofcompounds,therelationshipbetweenthecationsandanionsinwater,thefollowingstatementiscorrect().A、thesumofthemolarconcentrationofeachcationisequaltothesumofthemolarconcentrationofananion(molarconcentration=equivalentconcentration)B、thesumofthemasspercentageconcentrationofcationsandanionsisequalC、thesumofthevolumepercentageconcentrationofcationsandanionsisequalD、therelationshipbetweenthetwoisuncertain【正确答案】：A88.AA001Thefirststepinon-sitefirstaidforacutepoisoningis().A、CallthepolicequicklyB、Call120foremergencyhelpquicklyC、QuicklymovethepatienttoaplacewithfreshairD、Performartificialrespirationquickly【正确答案】：C89.AA001Temporaryhardnessreferstothatcausedbythe()ofcalciumandmagnesium.A、carbonateB、NitrateC、sulfateD、Bicarbonate【正确答案】：D90.AA001Non-carbonatehardnessaftersodiumionexchangetheproductis().A、alkalinesaltB、AcidsaltC、neutralsaltD、alkali【正确答案】：C91.AA001Thefeedwaterdosingpointisusuallylocatedatthe()position.A、deaeratorinletB、afterthedeaerator,infrontofthefeedpumpC、afterthefeedwaterpumpD、aftercondensingthepump【正确答案】：B92.AA001ValvewithmodelnumberZ941T-10,wherethefirstnumber"1"indicates().A、drivemodeB、connectionmodeC、structuralformD、Nominalpressure【正确答案】：C93.AA001Magnitudeofwatertemperaturechangeingroundwatercomparedtosurfacewater().A、LargeB、SmallC、SmallinwinterandbiginsummerD、biginwinterandsmallinsummer【正确答案】：B94.AA001Petroleumfractionreferstothefractionseparatedduringcrudeoildistillationwithacertainboilingrange,wheretheboilingrangerefersto().A、BoilingpointrangeB、PressurerangeC、DensityrangeD、Flashpointrange【正确答案】：A95.AA001Whenengaginginoperationsinvolving(),hotwater,orhotground,correspondingrubbershoesshouldbeworn.A、HardgroundB、CorrosiveC、MaintenanceoperationsD、Machinetooloperations【正确答案】：B96.AA001Iftheworkplaceisdamp,toavoidelectricshock,thepersonusinghandheldelectrictoolsshould().A、OperatewhilestandingonawoodenboardB、OperatewhilewearingclothshoesC、OperatewhilestandingonaninsulatingrubbermatD、Operatewhilewearinganti-staticshoes【正确答案】：C97.AA0014Analyzewatersampleswithtracesiliconcomponentsthatmustbecollectedusing().A、plasticbottlesB、WhiteglassbottlesConicalbottleD、Brownglassbottle【正确答案】：A98.AA001Ofthefollowingsofteningtreatments,theonethatsimultaneouslyreducesalkalinityinwateris().A、single-stagesodiumionexchangeB、two-stagesodiumionexchangeC、sodiumhydrogenexchangeD、Limetreatment【正确答案】：C99.AA001Thefeedwaterhardnessof3.8~5.8MPasteamdrumboilershouldbe()μmolL.A、≤0.5B、≤1C、≤2D、≤5【正确答案】：C100.AA001Iftheelectricchargepassingthroughtheconductor'scross-sectionSintimetisQ,andtheconductor'sresistanceisRandvoltageisU,thenthecurrentintensityIshouldbe().A、I=QSB、I=QtC、I=UtD、I=QR【正确答案】：B101.AA001Accordingtotheboilertype,rawwaterconditionsandsiteconditions,thecompositionofchemicalwatertreatmentsystemismainlydividedintotwocategories:furnacewatertreatmentand().A、sterilizationtreatmentB、filtrationtreatmentC、precipitationtreatmentD、watertreatmentoutsidethefurnace【正确答案】：D102.AA001Thedischargevalvestatusoftheplungertypemeteringpumpis()whenitdrawsliquid.A、openB、CloseC、NoactionD、Openorclose【正确答案】：B103.AA001Toachievethefollowingchange,anoxidizingagentisneededfor().A、HCI→CI2B、NaCl→HCIC、HCI→H2D、CaCO3→CO2【正确答案】：A104.AA001Ofthefollowingsofteningtreatmentprocessesthatdonotreducealkalinityinwaterare().A、two-stagesodiumexchangeB、ParallelexchangeofhydrogenandsodiumC、sodiumhydrogenexchangeinseriesD、addacidaftersodiumexchange【正确答案】：A105.AA001ValvewithmodelnumberZ941T-10,wherethenumber"4"indicates()connectionmethod.A、externalthreadB、flangeClamptypeD、welding【正确答案】：B106.AA001Whenawaterjetejectorisworking,avacuumwillbeformedinthe().A、NozzleB、SuctionchamberC、MixingtubeDiffuser【正确答案】：B107.AA001WhenthefeedwaterpHvalueandtemperaturearethesame,thegreatertheexcessamountofhydrazine,the()thetimerequiredfordeoxygenation.A、LessB、MoreCompletelyunaffectedD、Slightlyaffected【正确答案】：A108.AA001Thefire-extinguishingrangeoftheMPT100typewheeleddrypowderfireextinguisheris()m.A、16~18B、14~16C、12~14D、18~20【正确答案】：A109.AA0011engineeringatmosphereisequalto()Pascals.A、1.013×105B、1.013×104C、1.013×103D、1.013×102【正确答案】：A110.AA001IntheInternationalSystemofUnits(SI),theprefix"mega"representsafactorof().A、104B、106C、108D、102【正确答案】：B111.AA001Underacertaintemperature,whenasolidsubstanceisplacedinwater,themoleculesorionsonthesurfaceofthesolutegraduallydisperseintothewater,overcomingtheintermolecularforcesofthesolidsubstanceduetotheirownmovementandtheattractionofwatermolecules.Thisprocessiscalled().A、MeltingB、DilutionC、DissolutionDecomposition【正确答案】：C112.AA001Fortherotatingpartsofvariousbeltconveyorsandchainmachines,inadditiontoinstallingprotectivecovers,thereshouldalsobe().A、SafetyprotectiveropeB、ProtectivewireC、ProtectivepersonD、Protectivenet【正确答案】：A113.AA001Alkanesarethemaincomponentsofpetroleum.Undernormaltemperatureandpressure,alkanes(i.e.,thosecontaining1to4carbonatomsinthemolecule)are().A、SolidB、LiquidC、GasD、Cannotbedetermined【正确答案】：C114.AA001Amongthefollowingsubstances,theonethathasonlyoxidizingpropertiesis().A、PotassiumchlorateB、HydrogenionChlorinegasD、Concentratednitricacid【正确答案】：D115.AA001Ofthefollowingtypesofresins,()isepoxyresin.A、D331B、D111C、D202D301【正确答案】：A116.AA001Amongthefollowingdevicesandequipment,theonethatcannotbeusedasaloadfordirectcurrentis().A、TransformerB、IncandescentlampC、ElectricfurnacewireDCmotor【正确答案】：A117.AA001Toperformweldingoperationsonstoragetankscontainingexcessacid,ammoniaandoil,thefollowingstatementisincorrect().A、ThetankshouldbewashedcleanwithhotlyewaterB、theirresiduescanbedecomposedathightemperatures,andcanformanexplosivemixturewiththeairinthetankC、theycanbeweldeddirectlyD、cannotbeweldedwithoutcleantreatment【正确答案】：C118.AA001Thevocationalskillsappraisalexaminationbelongsto().A、Norm-referencedtestB、EmploymenttestCertificationtestD、Criterion-referencedtest【正确答案】：D119.AA001Iftheinfluentwaterqualityofavalvelessfilterdeteriorates,theautomaticoperationcyclewatervolumewill()andtheeffluentturbiditywill().A、Remainunchanged,remainunchangedB、Remainunchanged,increaseC、Decrease,remainunchangedDecrease,increase【正确答案】：D120.AA001Theepoxyfuranresinslurryshouldbeusedupwithin()minutesfromtheadditionofcuringagent.A、30B、40C、45D、60【正确答案】：D121.AA001Inthefeedwatertreatmentofreverseosmosis,therequirementofacetatemembraneforresidualchlorineinfeedwateris().A、lessthan1B、Lessthan0.1C、Lessthan10D、Lessthan0.3【正确答案】：A122.AA001Ofthefollowingwatertreatmentmethodsthatarenotpartofthesofteningtreatmentprocessare().A、sodiumionexchangetreatmentB、sodiumhydrogenionexchangetreatmentC、limetreatmentD、Anionandcationexchangetreatment【正确答案】：D123.AA001Blowerscanbeclassifiedbyworkingprincipleinto().A、Mixed-flowblower,rotaryblower,axial-flowblowerB、Mixed-flowblower,centrifugalblower,rotaryblowerCentrifugalblower,axial-flowblower,mixed-flowblowerD、Centrifugalblower,rotaryblower,axial-flowblower【正确答案】：D124.AA0014Analyzewatersampleswithtracesodiumcomponents,whichmustbecollectedusing().A、plasticbottleB、WhiteglassbottlesC、conicalbottleD、Brownglassbottle【正确答案】：A125.AA001Thecatalystthatcausesthecorrosivequalityofthewateris().A、HCO3-B、Cl-C、HSiO3-D、SO42-【正确答案】：B126.AA001Ofthefollowingsubstances,()belongstoelectrolytes.A、IronB、tablesaltC、AlcoholD、sugar【正确答案】：B127.AA001Inthefollowingstatements,()isnotapropertyofconcentratedsulfuricacid.A、oxidationB、volatilityC、WaterabsorptionD、dehydrating【正确答案】：B128.AA0011calorie(cal)isequalto()joules(J).A、4.1686B、4.1816C、4.1818D、4.1826【正确答案】：B129.AA001Whenthehardnessofthefeedwaterexceedsthestandard,thecorrecttreatmentmeasuresforthefurnacewatershouldbe().A、donotneedtobetreatedB、turndowncontinuousdischargeC、turnoncontinuousdischargeD、contactthewatertreatmenttoeliminatethefault【正确答案】：C130.AA001Whichpartsofthecylinderoftheplungertypemeteringpumparecomposedof().A、suctionvalve,dischargevalve,pistonB、turbinedrive,suctiontank,dischargetankC、diaphragm,suctionvalve,dischargevalveD、oilchamber,diaphragm,piston【正确答案】：A131.AA001Thefeedwaterofthereverseosmosisrolledmembraneelementflowsinthedirectionwiththemembranesurface().A、verticalB、ParallelC、TiltD、uncertain【正确答案】：A132.AA001Theprocessofremovingodorsandorganicsubstancesbyactivatedcarbonfiltersistheresultof()action.A、OxidationB、AdsorptionC、SievingD、Bridging【正确答案】：B133.AA001Thecondenserleakcausesthehardnessofthefeedwatertoexceedthestandard.Thetreatmentmethodmustbe().A、dischargeofdrainageB、contacttheturbineleakage,leakagepluggingC、strengthenammoniatreatmentD、contactthewatertreatmenttoeliminatethefault【正确答案】：B134.AA001Toimprovethecoagulationeffect,selectinghigh-performancechemicalsbasedonthequalityoftherawwaterandcreatingsuitablechemicaland()conditionsarethetechnicalkeystocoagulationprocesses.A、ReactionB、SedimentationC、HydraulicD、Mixing【正确答案】：C135.AA001Thebackuppumpneedstobeturnedontime,notforthepurposeof().A、preventthepumpshaftrustdeathB、preventthepumpshaftfrombendingdeformationC、inwintercanpreventthepumpshaftandshellfreezingD、preventthewaterinthepumpchamberfrombecomingsmelly【正确答案】：D136.AA001Adispersionsystemwithdispersedphaseparticlediametersintherangeof()nmiscalledacolloidalsolution.A、≥1B、1~100C、10~1000D、≤100【正确答案】：B137.AA001Whenpurewaterandsaltwaterareseparatedbyanidealsemi-permeablemembrane,theexternalpressureappliedtothesaltwaterside(osmoticpressure),thewateronthesaltwatersidewillflowintothepurewaterside,aphenomenoncalledreverseosmosis.A、equaltoB、lessthanC、greaterthanD、close【正确答案】：C138.AA001Whenthefollowingvalvesarefullyopenedwiththesamediameter,thewatercrossingsectionof()isthesmallest.A、butterflyvalveB、gatevalveC、ballvalveD、plugvalve【正确答案】：A139.AA001Afterthescaleinhibitorisaddedtothewatersupplyofthereverseosmosissystem,thecorrectstatementabouttheLSIindexintheconcentratedwaterareais().A、mustbelessthan0,otherwisethereisascalingtendencyB、mustbegreaterthan0,otherwisethereisascalingtendencyC、mustbelessthan1,otherwisethereisatendencytoscaleD、allowmoderategreaterthan0【正确答案】：D140.AA001Itisknownthatthediameterofadesaltingwatertankis12m,theheightis10m,nowthetankisfullofliquidlevel,theeffectivewatersupplyheightis8m,ifthewatersupplyloadis200m3h,thewatersupplycanbeguaranteedfor()hours.A、4.52B、5.65C、6D、7【正确答案】：A141.AA001Themostimportantperformanceindexthataffectstheperiodicwateryieldofion-exchangeresinis().A、sphericityB、exchangecapacityC、SelectivityD、Mechanicalstrength【正确答案】：B142.AA001ThecorrosionproductsgeneratedbyfreeCO2corrosionare().A、SolubleB、InsolubleC、AcidicD、Alkaline【正确答案】：A143.AA001TheeffectivePHrangeofhydrogentypeweakacidpositiveresinis().A、0to14B、4to14C、6to10D、0to7【正确答案】：B144.AA001Surfacewaterisamoreconvenientsourceofwatersupply,anditsmainrechargesourceis().A、rainfallB、SurfacerunoffC、RainfallandsurfacerunoffD、infiltrationrecharge【正确答案】：C145.AA001Therearefourtypesofcationsthatareusuallyhigherinnaturalwater,called().A、Na+、Mn2+、Ca2+、Mg2+B、Na+、K+、Ca2+、Mg2+C、Na+、K+、Fe2+、Ca2+D、Na+、K+、Ca2+、Cu2+【正确答案】：B146.AA001Dependingon(),ionexchangeresinscanbedividedintocationexchangeresinsandanionexchangeresins.A、exchangeab