全国专业技术人员职称英语等级考试（理工类A级）真题及解析（2026年）

第第页全国专业技术人员职称英语等级考试（理工类A级）真题及解析（2026年）第一部分词汇选项（第1–15题，每题1分，共15分）说明：下面每个句子中均有1个单词或短语带有下划线，请为划线部分选出语义最接近的一项，每题仅有一个正确答案，题干末尾（）填写答案字母。1.Theresearcherswillexplorenewenergystoragematerialsinthenextthreeyears.（）A.rejectB.investigateC.replaceD.ignore答案：B解析：explore意为探究、研究，investigate词义匹配。2.Thisalloycanresisthightemperatureandstrongcorrosioninextremeindustrialenvironments.（）A.standagainstB.giveupC.takeinD.breakdown答案：A解析：resist抵抗，standagainst抵御，语义一致。3.Engineersneedtomodifythestructuralparameterstoreducemechanicalvibration.（）A.copyB.cancelC.adjustD.memorize答案：C解析：modify修改，adjust调整，互为近义词。4.Theautomaticsensorcandetecttinypressurechangesinsidethepipelineinstantly.（）A.hideB.senseC.delayD.block答案：B解析：detect探测、察觉，sense感知，含义相近。5.Theprojecthassubstantialfinancialsupportfromlocalindustrialinvestmentfunds.（）A.littleB.moderateC.hugeD.uncertain答案：C解析：substantial大量的、可观的，huge巨额的匹配。6.Itisvitaltopreserverawexperimentaldataforsubsequentverificationandreview.（）A.discardB.storeC.editD.classify答案：B解析：preserve保存留存，store储存，词义相符。7.Themachinewillceaseoperationautomaticallyonceabnormalcurrentisdetected.（）A.startB.continueC.stopD.accelerate答案：C解析：cease停止，stop终止，近义词替换。8.Weneedtofacilitatecommunicationbetweendesignteamandproductionworkshop.（）A.hinderB.simplifyC.interruptD.promote答案：D解析：facilitate促进、便于，promote推动匹配。9.Thisinnovativedesigncanminimizeenergylossduringpowerconversion.（）A.increaseB.eliminateC.reduceD.maintain答案：C解析：minimize使最小化，reduce减少，语义契合。10.Thetechnicianmadeaprecisecalculationofsystempowerconsumption.（）A.roughB.accurateC.casualD.complex答案：B解析：precise精确的，accurate准确的互为同义词。11.Thefactoryplanstodeployintelligentrobotsonassemblylinesnextquarter.（）A.removeB.arrangeC.sellD.repair答案：B解析：deploy部署投放，arrange布置安排匹配。12.Externalvibrationmayinterferewiththenormalrunningofprecisioninstruments.（）A.disturbB.assistC.followD.control答案：A解析：interferewith干扰妨碍，disturb扰乱同义。13.Scientistsaretryingtoutilizesolarenergymoreefficientlyforindustrialheating.（）A.wasteB.applyC.borrowD.limit答案：B解析：utilize利用，apply运用使用，词义一致。14.Thematerialshowsremarkablestabilityunderlong-termcyclicload.（）A.ordinaryB.poorC.outstandingD.limited答案：C解析：remarkable显著突出的，outstanding优异的匹配。15.Staffmustcomplywithsafetyspecificationsduringequipmentmaintenancework.（）A.breakB.followC.questionD.rewrite答案：B解析：complywith遵守，follow遵从，短语同义替换。本部分得分小计：____/15分第二部分阅读判断（第16–22题，每题1分，共7分）说明：阅读下文，判断7个句子正误；选A代表正确（Right）、B代表错误（Wrong）、C代表原文未提及（Notmentioned），每题单选，题干末尾（）填写答案字母。短文原文：AdvantagesofOffshoreWindPowerGenerationOffshorewindpowerhasdevelopedrapidlyoverthepastdecadeasacorecleanenergysolutionforcoastalindustrialregions.Comparedwithonshorewindfarms,offshorewindresourcesaremorestableandabundant.Windspeedaboveseawaterisgenerally20%higherthanthatonland,andsurfaceturbulenceismuchweaker,whichimprovestheannualpowergenerationefficiencyofwindturbinessignificantly.Modernoffshorewindturbineunitsaredevelopingtowardlarge-capacitymodels.Currentmainstreamcommercialunitsreach16–18megawatts,whileresearchinstitutesaretestingprototypesabove20megawatts.Largersingle-unitcapacitycutslandoccupationcostperkilowattandreducesoverallconstructioninvestmentinwindfarms.Installationandmaintenanceofoffshorewindequipmentfaceobvioustechnicalchallenges.Marinecorrosion,saltfogerosion,typhoonimpactandtidalfluctuationallshortentheservicelifeofmechanicalcomponents.Operatorsinstallreal-timeonlinemonitoringsystemsoneachunittocollectvibration,temperatureandstressdataofgearboxes,generatorsandtowerstructures.Onceearlyfaultsignsarecaptured,maintenanceshipscanarrangetargetedoverhaultoavoidunplannedlong-termshutdownlosses.Fromanenvironmentalperspective,offshorewindprojectsproducenoairpollutantsorcarbonemissionsduringoperation.Theyhavenegligibleinterferencetoterrestrialvegetationandresidentialnoise,thoughconstructionphasemaybringtemporaryinfluenceonshallowmarinebenthicorganisms.RelevantenvironmentalassessmentreportsmustbesubmittedandapprovedbeforeprojectcommencementinallcoastalprovincesofChina.16.Windspeedovertheseaisaboutonefifthhigherthanwindspeedonland.（）A.RightB.WrongC.Notmentioned答案：A解析：原文海上风速比陆地高20%，即五分之一，表述正确。17.Thelargestcommercialoffshorewindturbineinmassproductionhasexceeded25megawattsatpresent.（）A.RightB.WrongC.Notmentioned答案：B解析：主流商用机型16–18兆瓦，20兆瓦以上仅处于试验样机阶段，题干表述错误。18.Large-capacityoffshorewindturbinesraisetheaverageconstructioncostperkilowatt.（）A.RightB.WrongC.Notmentioned答案：B解析：大容量机型降低单位千瓦占地与造价，题干逻辑相反。19.Saltfogandmarinecorrosionaremajorthreatstotheservicelifeofoffshorewindequipment.（）A.RightB.WrongC.Notmentioned答案：A解析：原文明确海水腐蚀、盐雾侵蚀缩短零部件寿命，表述正确。20.Onlinemonitoringsystemsmainlytrackthepowersalesrevenueofwindfarmsinrealtime.（）A.RightB.WrongC.Notmentioned答案：B解析：监测系统采集振动、温度、应力等运行参数，并非营收数据，错误。21.Offshorewindoperationwilldischargeasmallamountofsulfurdioxideintoseawaterregularly.（）A.RightB.WrongC.Notmentioned答案：B解析：运行阶段无空气污染物与碳排放，题干说法错误。22.ForeigncoastalcountrieshaveissuedstricteroffshorewindenvironmentalrulesthanChina.（）A.RightB.WrongC.Notmentioned答案：C解析：仅提及国内环评审批要求，未对比国外政策严格程度，未提及。本部分得分小计：____/7分第三部分概括大意与完成句子（第23–30题，每题1分，共8分）说明：短文设置两项任务：任务一（23–26）为指定4个段落匹配小标题，从A–F六个选项择优选择；任务二（27–30）补全4个残缺句子，同样从A–F选型匹配，每个选项只能使用一次。题干末尾（）填写对应选项字母。短文原文：ApplicationProspectsofGrapheneinEngineeringIndustryParagraph1Grapheneisatwo-dimensionalcarbonnanomaterialcomposedofsingle-layercarbonatomsarrangedinhexagonallatticestructure.Itpossessesultra-hightensilestrength,excellentthermalconductivityandoutstandingelectricalconductivity.Itsmechanicalstrengthishundredsoftimesstrongerthansteelatthesamethickness,makingitoneofthetoughestknownmaterialsinmodernmaterialscience.Paragraph2Graphenemodifiedcompositecoatingshavebeenwidelyappliedinanti-corrosionengineeringfields.Whencoatedonsteelpipelines,shiphullsandpressurevessels,thedensegraphenebarrierlayerblockspenetrationofwater,oxygenandchlorideions,slowingelectrochemicalcorrosionreactioneffectively.Thiscoatingtechnologyextendsequipmentservicelifegreatlyundermarineandundergroundharshworkingconditions.Paragraph3Newgenerationlithium-ionbatteriesdopedwithgraphenematerialachieveobviousperformanceimprovement.Graphene’shighconductivityshortenselectrontransmissionpathinsideelectrodeplates,promotingfasterchargingspeed.Meanwhile,itincreasesbatterycyclestabilityandenergydensity,whichbenefitsnewenergyvehiclesandlarge-scaleenergystoragepowerstations.Paragraph4Graphene-basedflexiblepressuresensorshavebecomearesearchhotspotinintelligentmeasurement.Ultra-thingraphenefilmscanconverttinypressuredeformationintoelectricalsignalchangeswithhighsensitivity.Suchsensorsareembeddedintomechanicalequipmenttorealizereal-timestressmonitoring,faultearlywarningandstructuralhealthdiagnosisforbridges,towersandaerospacecomponents.备选小标题选项（A–F）A.UniquebasicphysicalpropertiesofgrapheneB.Anti-corrosionapplicationofgraphenecoatingC.EnergystorageoptimizationforlithiumbatteriesD.SensingfunctionforstructuralhealthmonitoringE.Highproductioncostrestrictinglarge-scalepromotionF.Environmentalpollutionrisksofgraphenewaste任务一：概括大意（23–26题）23.Paragraph1（）答案：A解析：第一段介绍石墨烯微观结构与独有理化特性。24.Paragraph2（）答案：B解析：本段围绕石墨烯防腐涂层工程应用展开阐述。25.Paragraph3（）答案：C解析：讲解石墨烯掺杂改性锂电池储能性能优势。26.Paragraph4（）答案：D解析：介绍石墨烯柔性传感器结构监测与预警用途。任务二：完成句子（27–30题，选项仍使用上方A–F）27.Grapheneranksamongthestrongestengineeringmaterialsowingtoits____.（）答案：A解析：依托自身独特物理属性拥有超高强度。28.Steelfacilitiesinmarineenvironmentrelyongraphenecoatingtoresist____.（）答案：B解析：防腐涂层阻隔侵蚀介质，延缓金属腐蚀。29.Addinggrapheneinsidebatteryelectrodeshelpsupgradethe____ofrechargeablebatteries.（）答案：C解析：改性优化锂电池充电速率、能量密度等储能性能。30.Graphenepressuresensorscapturemicrodeformationsignalstorealize____ofengineeringstructures.（）答案：D解析：传感器用于工程构件应力监测与健康诊断。本部分得分小计：____/8分第四部分阅读理解（第31–45题，每题3分，共45分）说明：本部分包含3篇阅读理解文章，每篇短文设置5道单选题，每题仅有一个最优答案，题干末尾（）填写答案字母。PassageOne：IntelligentPredictiveMaintenanceforIndustrialRotatingMachineryTraditionalmaintenancemodesforrotatingequipmentsuchasmotors,fansandgearboxesmainlyincludebreakdownmaintenanceandregularscheduledmaintenance.Breakdownmaintenanceonlycarriesoutrepairworkafterequipmentcompletefailure,whichoftenleadstosuddenproductionshutdown,largeeconomiclossandevensafetyaccidents.Periodicpreventivemaintenancearrangesdisassemblyinspectionandpartreplacementaccordingtofixedtimecycle,yetitinevitablycausesover-maintenancewasteormissinghiddenearlyfaults.Intelligentpredictivemaintenancesystemchangesthispassivemaintenancelogicfundamentally.Multipletypesofsensorsareinstalledatkeybearingpositions,collectingreal-timedataincludingvibrationamplitude,operatingtemperature,rotationalspeedandnoisespectrum.Theuploadeddataistransmittedtoindustrialedgecomputingterminalsforsignaldenoising,featureextractionandthresholdcomparisonanalysis.Machinelearningalgorithmscontinuouslytrainfaultidentificationmodels,enablingthesystemtojudgepotentialfailureriskweeksormonthsinadvance.Whenabnormalcharacteristicparametersexceedpresetsafetythresholds,thesystemautomaticallypushesearlywarningmessagestomanagementterminalsofmaintenancedepartment.Technicianscanarrangetargetedinspectionandcomponentreplacementbeforefaultdeterioration,reducingunplanneddowntimesignificantly.Statisticaldatafrommanufacturingenterprisesshowsthatpredictivemaintenancecancutoverallequipmentmaintenancecostby25%–35%,lowerunexpectedshutdownfrequencybymorethan60%,andextendaverageequipmentservicelifeby15%orabove.Atpresent,themainobstaclestofull-scalepopularizationlieininitialinvestmentcostofsensinghardware,dataanalysisalgorithmdevelopmentdifficultyandprofessionaltechnicalpersonnelmatchingshortage.Smallandmedium-sizedfactorieshesitatetoinvestinintelligenttransformationduetotightcapitalbudget,whilelargegroupenterprisesgraduallytaketheleadinbuildingfull-processintelligentoperationandmaintenancemanagementplatforms.31.Whatisthedisadvantageofbreakdownmaintenance?（）A.ItrequiresfrequentmanualinspectionregularlyB.ItmaytriggersuddenproductionhaltandeconomiclossesC.ItleadstoexcessivesparepartsconsumptionallthetimeD.Itneedscomplexalgorithmmodelfordataanalysis答案：B解析：故障后维修易突发停产，造成经济损失。32.Wherearesensorsgenerallyinstalledforpredictivemaintenancesystem?（）A.InsidefactorycentralcontrolcomputerroomB.OnthesurfaceofequipmentkeybearingpositionsC.AttheoutletoffactorypowerdistributioncabinetD.Besiderawmaterialconveyingpipelines答案：B解析：传感器布置在轴承关键点位采集运行参数。33.WhichdatawillNOTbecollectedbythemonitoringsensorsmentionedinthepassage?（）A.VibrationvalueB.OperationtemperatureC.EquipmentpurchasepriceD.Rotationspeed答案：C解析：采集振动、温度、转速等运行数据，不含采购价格。34.Whateconomicbenefitcanpredictivemaintenancebringtoenterprises?（）A.IncreaserawmaterialprocurementpriceB.ReduceequipmentmaintenancetotalexpenditureobviouslyC.RaisethelaborcostofworkshopworkersD.Shortenthewholeservicelifeofmechanicaldevices答案：B解析：预测性维护可降低整体设备维保开支25%-35%。35.Whydosomesmallfactoriesresistintelligentmaintenancetransformation?（）A.LacksufficientcapitalforupfronthardwareinvestmentB.TheirequipmentneverappearsmechanicalfailureC.GovernmentprohibitsintelligentsysteminstallationD.Existingmaintenancestaffrefusetolearnnewtechnology答案：A解析：中小企业资金紧张，难以承担前期智能化改造成本。PassageTwo：HydrogenEnergy:CleanEnergyforFutureIndustrialDecarbonizationHydrogenenergyisregardedasoneofthemostpromisingzero-carbonsecondaryenergysourcesworldwide.Unlikefossilfuelssuchascoal,oilandnaturalgas,hydrogencombustiononlyproduceswatervaporwithoutcarbondioxide,sulfuroxidesandparticulatepollutants,matchingglobalcarbonpeakingandcarbonneutralitydevelopmentgoalsperfectly.Hydrogenproductionmethodsareclassifiedintothreemainstreamtechnicalroutesaccordingtorawmaterials.Grayhydrogencomesfromsteamreformingofnaturalgasandcoalgasification,accompaniedbylargecarbonemissionduringproductionprocess,whichiscurrentlythelowest-costmassproductionmodeoccupyingover90%globalhydrogenoutput.Bluehydrogenaddscarboncaptureandstorage(CCS)devicesongrayhydrogenproductionlinestotrapandisolategeneratedcarbondioxide,cuttingcarbonfootprinteffectivelyatmoderateincrementalcost.Greenhydrogenreliesonsurpluswindpowerandphotovoltaicelectricitytoelectrolyzewatertoproducehydrogen,achievingfull-cyclezerocarbonemission,butelectrolyzerequipmentandelectricityexpensemakeitsproductionpricerelativelyhighatthisstage.Inheavyindustrysectorsdifficulttodecarbonize,hydrogensubstitutionshowsprominentapplicationvalue.Steelmakingcanreplacepartofcokingcoalwithhydrogendirectreductiontechnologytolowerblastfurnacecarbonemissionintensity.Heavy-dutytrucks,containershipsandlong-distancepassengervehiclesadopthydrogenfuelcellpowersystemstosolvebatterylow-temperatureattenuationandshortcruisingrangedrawbacksofpureelectricvehicles.Hydrogenalsoparticipatesinpeakregulationofnewenergypowergrid,consumingabandonedwindandsolarelectricitytobalancepowersupplyanddemandfluctuation.Thebottlenecksrestrictinglarge-scalehydrogenindustrializationincludehighstorageandtransportationcost,hydrogenembrittlementcorrosionrisktometalpipelines,incompletesafetysupervisionstandardsystemandinsufficientcoremateriallocalizationrateoffuelcellstacks.Nationalindustrialpolicieshaveissuedtargetedsubsidiesandtechnicalresearchspecialprojectstobreakthroughtheserestrictivefactorsstepbystep.36.Whatistheenvironmentaladvantageofhydrogencombustion?（）A.ItconsumeslessoxygenthancoalburningB.ItonlygenerateswatervaporwithnoharmfulemissionsC.ItcanbestoredundergroundfordecadesstablyD.Itscombustiontemperatureislowerthanallfossilfuels答案：B解析：氢气燃烧产物仅水蒸气，无碳排放与污染物。37.Whichtypeofhydrogenaccountsforthelargestglobalproductionsharenow?（）A.GreenhydrogenB.BluehydrogenC.GrayhydrogenD.Whitehydrogen答案：C解析：灰氢占全球氢气总产量90%以上。38.Whattechnicalmeasuredoesbluehydrogenadopttoreducecarbonemission?（）A.UsingphotovoltaicpowertosplitwaterdirectlyB.EquippingcarboncaptureandstoragefacilitiesC.TransportinghydrogenthroughdedicatedplasticpipelinesD.Burninghydrogenmixedwithnaturalgasforpowergeneration答案：B解析：蓝氢配套CCS碳捕集封存装置削减碳排放。39.Whatproblemofpureelectricvehiclescanhydrogenfuelcellvehiclessolve?（）A.ExcessivemanufacturingcostofvehiclebodystructureB.Batterypoorlow-temperatureperformanceandinsufficientdrivingmileageC.ComplexdailychargingoperationprocessD.Seriouswastebatteryrecyclingpressure答案：B解析：氢燃料电池弥补电动车低温衰减、续航短板。40.WhichitemisNOTalimitingfactorforhydrogenindustrypopularization?（）A.HighhydrogenstorageandtransportationexpenseB.HydrogenembrittlementdamagingmetalconveyingpipelinesC.MatureandcompleteinternationalunifiedsalespricesystemD.Insufficientlocalizationleveloffuelcellcorematerials答案：C解析：定价体系成熟并非制约氢能规模化发展障碍。PassageThree：AdditiveManufacturing(3DPrinting)inAdvancedEquipmentManufacturingAdditivemanufacturing,commonlyknownas3Dprinting,overturnstraditionalsubtractivemanufacturingcuttingandmoldingthinking.Traditionalmachiningremovesredundantmaterialfromsolidblankthroughturning,milling,planingandgrindingprocessestoobtainfinishedparts;3Dprintingaccumulatesmetalpowder,resin,polymercompositelayerbylayerunderdigitalmodeldriving,formingcomplexinternalcavityandlatticeintegratedstructuresthataredifficultorimpossibletoprocesswithconventionaltechniques.Metal3Dprintinghasgainedwideadoptioninaerospaceequipmentproduction.Aero-engineturbinebladescontaincomplexinternalcoolingflowchannelsforhigh-temperatureheatdissipation.Integralmoldingviaselectivelasermeltingavoidsassemblygapsgeneratedbysplicingmultiplecomponents,improvesstructuralstrengthandcoolingefficiency,andshortensoverallcomponentprocessingcyclefromseveralmonthstoafewweeks.Inaerospacelightweightdesign,topologicaloptimized3Dprintedpartsreducestructuralweightby20%–40%whilemaintainingmechanicalpropertyrequirements,liftingaircraftloadandfueleconomyperformance.Inmedicalengineeringandindustrialmoldindustry,3Dprintingalsopresentsuniquecompetitiveness.CustomizedmedicalimplantssuchashipjointprosthesisanddentalcrownareproducedaccordingtoindividualpatientCTscanningdata,realizingpersonalizedmatchingfit.Injectionmoldconformalcoolingchannelsprintedbyadditivemanufacturingshortenmoldopeningcoolingperiod,improveplasticproductsurfaceprecisionandmoldingefficiencyforautopartsandelectronichousings.Currentshortcomingsrestrictinglarge-scaleindustrialbatchapplicationincluderelativelyhighunitprintingcost,limitedformingsizeofmainstreamequipment,internalporosityandmicrocrackdefectsinsideprintedmetalparts,andstrictpost-processingpolishingrequirements.Materialformulaoptimization,laserprecisioncontrolupgradingandintelligentonlinedefectdetectiontechnologyareimportantresearchdirectionsfornext-generationhigh-performanceadditivemanufacturingequipment.41.Whatisthecoredifferencebetween3Dprintingandtraditionalmachining?（）A.3DprintingusescheaperrawmaterialcompletelyB.3Dprintingadoptslayer-by-layermaterialaccumulationformingprincipleC.TraditionalprocessingonlyappliestometalmaterialproductionD.Traditionalprocessingcanmanufacturemorecomplexinternalstructures答案：B解析：3D打印逐层堆积成型，区别于传统切削减材制造。42.Whydoaerospacefactoriesapplymetal3Dprintingtoturbinebladeproduction?（）A.CutrawmaterialpurchasingquantitybyhalfsimplyB.FormcomplexinternalcoolingchannelintegrallywithoutsplicingassemblyC.LowerworkingtemperatureofenginewholeassemblygreatlyD.Makebladesurfacenolongerneedanti-corrosioncoatingtreatment答案：B解析：一体成型内置冷却流道，规避拼接装配间隙缺陷。43.Whatbenefitdoeslightweight3Dprintedcomponentbringtoaircraft?（）A.IncreaseaircraftpayloadcapacityandfuelefficiencyB.SimplifyaircraftflightcontrolcircuitlayoutC.ReduceaircraftmaintenancefrequencythoroughlyD.Eliminateaircraftvibrationduringcruisingflight答案：A解析：减重20%-40%，提升载重与燃油经济性。44.Howdoes3Dprintingservepersonalizedmedicaltreatment?（）A.ProducelargebatchofstandardmedicalconsumablesrapidlyB.CustomimplantpartsbasedonpatientscanningdatamatchingindividualstructureC.AutomaticallydetectdiseaselesionpositioninsidehumanbodyD.Replacealltraditionalsurgicaloperationinstrumentscompletely答案：B解析：依托扫描数据定制匹配型人工植入体。45.Whichproblemrestrictsmassindustrialapplicationof3Dprintingtechnology?（）A.TheformingspeedisfarfasterthantraditionalmachiningB.PrintedmetalpartsmaycontaintinyporesandmicrocracksC.RawmaterialtypesavailableforprintingareextremelyabundantD.Post-processingpolishingprocedureistotallyunnecessary答案：B解析：打印件内部气孔、微裂纹缺陷制约批量工业化使用。本部分得分小计：____/45分第五部分补全短文（第46–50题，每题2分，共10分）说明：短文内设置5处空白位置，文末给出A–F六个备选句子，仅有5句适配原文逻辑，选出对应句子填入空白，一个选项只用一次，题干括号填写对应字母。短文原文：AdvantagesandChallengesofSmartGridConstructionTraditionalpowergridadoptsone-waypowertransmissionmodefromcentralizedpowerplantstoendusers.Powerdispatchreliesonmanualexperiencejudgmentmostly,leadingtoslowresponsetoloadfluctuation,lowutilizationrateofdistributednewenergysuchasrooftopphotovoltaic,anddifficultyinprecisefaultlocationafterlinefailure.(46)（）Smartgridisbuiltbasedonsensingcommunication,bigdataanalysisandautomaticcontroltechnology,realizingtwo-wayinteractivetransmissionofelectricityandinformation.Massintelligentacquisitionterminalsarelaidontransmissionlines,distributiontransformersanduser-sidemeters.(47)（）Thebackgroundplatformanalyzesreal-timeloadvariation,predictspowerconsumptionpeakandvalleytrend,andcompletesautomaticpowerbalanceschedulingbetweenpowergenerationsideandconsumptionside.Fordistributedphotovoltaicandsmallwindpowerusers,smartgridsolvesgridconnectionbottleneckeffectively.Dispersedsmall-scalenewenergypowergenerationoftengeneratessurpluselectricityatnoonorwindyperiods.(48)（）Smartgridsupportssurpluspoweronlinereversetransmissiontopublicgrid,formingbenigncircularpowerconsumptionmodeandimprovingnewenergyabsorptioncapacityofwholepowersystem.Powerlinefaultdisposalefficiencygetsremarkablepromotionwithsmartgridsystem.Onceshortcircuit,groundingoroverloadfaultoccurssomewhereonthegrid,sensorsfeedabnormaldatabackimmediately.(49)（）Maintenancecrewscanrushtoaccuratefaultpointsdirectly,shortenpoweroutagerepairdurationandreduceeconomiclosscausedbypowercut.Nevertheless,smartgridconstructionstillfacesobviouschallenges.Massaccessofintelligentterminalequipmentraisesnetworkinformationsecurityrisks;massivereal-timedatastorageandcalculationputshigherrequirementonserveroperationperformance;cross-regionalcoordinatedschedulingmechanismalsoneedscontinuousoptimizationandpolicycoordination.(50)（）备选句子（A–F）A.Theseterminalscollectvoltage,current,powerconsumptionandequipmentoperatingstatusdatacontinuously.B.Inthepast,thisextraelectricitycouldnotbedeliveredtogridforrecyclingefficiently.C.Smartgridperfectlysolvesmultipleinherentdrawbacksofconventionalpowergridoperationmode.D.Thesystemcanautomaticallylocatefaultpositionandjudgefaulttypewithinseconds.E.Relevantpowerenterprisesareinvestingintechnicalupgradingandruleimprovementstepbystep.F.Fossilfuelpowergenerationwilldisappearcompletelywithintenyearsinmostregions.46.（）答案：C解析：承接传统电网弊端，引出智能电网解决其缺陷。47.（）答案：A解析：指代前文采集终端，说明终端采集各类电力运行参数。48.（）答案：B解析：说明以往分布式多余电量无法并网回收的旧难题。49.（）答案：D解析：故障数据回传后系统自动定位故障点位、判定故障类型。50.（）答案：E解析：面对现存挑战，电力企业逐步开展技术与制度优化改进。本部分得分小计：____/10分第六部分完形填空（第51–65题，每题1分，共15分）说明：通读短文，每个空格设置A、B、C、D四个选项，选择唯一最佳答案填入，题干末尾（）填写答案字母。短文原文：ApplicationofUltrasonicTestinginIndustrialNon-DestructiveTestingNon-destructivetesting(NDT)referstodetectiontechnologyevaluatinginternalandsurfacedefectsofmaterialsandcomponents51destroyingoriginalstructuralintegrityoftestedworkpieces.UltrasonictestingisoneofthemostwidelyappliedNDTmethodsinmachinery,pressurevessel,pipelineandaerospaceengineeringfields.Ultrasonicprobeemitshigh-frequencysoundwavepropagatinginsidesolidmedium.Whensoundwaveencountersinternalcracks,poresorinclusiondefects,partialacousticenergyreflectsbacktotheprobetoformechosignal.Techniciansanalyzeechowaveform,timedelayandamplitudedatatojudgedefect52,sizeanddistributiondepthinsidecomponents.Comparedwithradiographictesting,ultrasonictestingcarriesmultipleobviousmerits.Itsdetectionequipmentisportableandeasyforon-sitemobileoperation;radiationhazarddoesnotexistduringtestingprocess,ensuringoperatoroccupationalsafety;detectionthicknessrangeis53,capableofinspectingthicksteelforgingpartsexceedinghundredsmillimeters,whileX-raydetectionhasstrictlimitationonpenetrationthickness.Duringpracticalinspectionwork,operatorsmustcompletesystematiccalibrationbeforeformaltesting.Standardtestblockswithknownartificialdefectsareusedtoadjustinstrumentsensitivity,eliminatemeasurementerrorcausedbysoundvelocitydifferenceofdifferent54.Improperparametersettingwillleadtomisseddetectionorfalsejudgmentoftinyhiddenflaws,bringinghiddendangertolong-termsafeserviceofpressure-bearingequipment.Inrecentyears,phasedarrayultrasonictechnologyhasgradually55traditionalsingle-probeultrasonicequipment.Phasedarr