雨课堂学堂在线学堂云《Nuclear Reactor Engineering（哈尔滨工程）》单元测试考核答案

第1题Howlongistheaccidentnon-interventiontimeofpassivesafetytechnology？A30hoursB12

hoursC24

hoursD72

hours第2题Thepassivesafetysystemconsistsof()APassivewasteheatremovalsystemBPassivecorecoolingsystemCPassivesafetyinjectionsystemDPassivecontainmentsprinklersystemEEmergencyresidencesystemforpassivemaincontrolroomFPassivecontainmenthydrogencontrolsystemGPassivecontainmentPHcontrolsystemHAutomaticpressurereductionsystem正确答案：ABCDEFGH第3题Whatarethepassiveandsafeenergysources()ANaturalconvectionBgravityCNegativefeedbackDConcentrationdifferenceEPressureaccumulationFGasexpansion正确答案：ABCDEF第4题Whataretheadvantagesofpassivesafetytechnology()ALowhumanerrorrateB72hoursofnon-interventiontimeCHighsystemreliabilityDNoneedforsafety-levelemergencypowersupplyEHigheconomyFBlockconstruction正确答案：ABCDEF第5题Comparedwithactivesafetytechnology,whatarethepossibledisadvantagesofpassivesafetytechnology?ALowdrivingforceBStartslowlyCLowreliabilityDPooreconomy正确答案：AB第6题Passivesafetytechnologydoesnotrequireenergy第7题Passivesafetytechnologyisbetterthanactivesafetytechnology第8题Activesafetytechnologyandpassivesafetytechnologyarenotcompatible第1题Thecoolantflowthroughthecoreisgenerallygreaterthanthecoolantflowprovidedbythemainpump,whichisduetotheexistenceof()ARecirculationpumpBCondensatepumpCSteamturbineDFeedwaterheater第2题Onemaindifferencebetweenpressurizedwaterreactorandboilingwaterreactornuclearpowerplantisthatthereisno()ASteamgeneratorBReactorcoreCContainmentDModerator第3题Boththehigh-pressurewaterinjectionsystemandthelow-pressurewaterinjectionsystemintheemergencycorecoolingsystemuse(),whilethecoreisolationcoolingsystemuses()AElectricpumpBPneumaticpumpCNopump正确答案：AB第4题Theemergencycorecoolingsystemincludes()ACoreisolationcoolingsystemBHighpressurecorespraysystemCLowpressurecorespraysystemDWasteheatremovalsystem正确答案：ABCD第5题Theboilingwaterreactorcoreisboiling,sothecoolantflowingthroughthecoretakesmoreheat.Thisisdueto____,sounderthesamethermalpowercondition,theboilingwaterreactorflowrate

____pressurizedwaterreactorflowrate.正确答案：:Latentheatofvaporization正确答案：:Lessthan第6题Whentheboilingwaterreactoradjuststhepowerchange,itcanberealizedby

____withoutthecontrolrod.正确答案：:Vacuoleeffect第7题Thebiggestdifferencebetweenboilingwaterreactorandpressurizedwaterreactoristhatthesteamproducedbyboilingwaterreactordirectlyentersthesteamturbinetoperformwork.第8题Inthelatestdesign,thereisasimplifiedeconomicalESBWR,whichadoptsafullnaturalcirculationdesignandcompletelyeliminatesthebuilt-inpump.Chapter4ChapterTest第1题IntheFukushimanuclearaccident,whatwasthemainreasonforthepoweroutageofthewholeplant()ANotenoughemergencygeneratorsBOff-siteelectricitysupportisnottimelyenoughCThedistributionsystemisfloodedDThetornadocutthewires第2题Whichunitshavehydrogenexplosions?AFirstunitBSecondunitCThirdunitDFourthunitEFifthunitFSixthunit正确答案：ACD第3题Nuclearincidentsaredividedinto7levels.ThepreviousThreeMileIslandaccidentlevelwas()levelandtheChernobylaccidentlevelwas()level.A4B5C6D7正确答案：BD第4题Whenanaccidentoccurs,whataretheunitsinthenormaloperationstage()AFirstunitBSecondunitCThirdunitDFourthunitEFifthunitFSixthunit正确答案：ABC第5题Thefourthunitwasundermaintenancewhentheaccidentoccurred,andthefuelassemblywasinthespentfuelpool第6题TheFukushimanuclearaccidentwascausedbytheruptureofthecontainmentvesselcausedbytheearthquake第7题The“failuresafety”principleoftheFukushimanuclearpowerplanthasplayedanimportantroleinprotectingtheexpansionofaccidents第8题Sincethedischargewindowofthesecondunitbuildingwasopened,hydrogendidnotaccumulate,sotherewasnohydrogenexplosion第9题Afterthepressureofthethirdunitbuildingcontinuedtorise,thestaffusedlowpressuresafetyinjectionintimetosuccessfullycoolthecoreChapter7ChapterTest第1题Steady-stateflowreferstotheflowoftime-varyingparameters

____intheprocessoffluidflow;stableflowreferstothefactthatwhenthesystemissubjectedtoaslightdisturbance,itwillnotdeviatefromtheoriginalstateandthesystemcanreturntotheinitialstablestate正确答案：:don'tfollow第2题Thehazardscausedbyflowinstabilityinclude:________________。正确答案：:Mechanicalvibration正确答案：:Reactorcontrol正确答案：:Partialrefueling正确答案：:Materialthermalfatigue第3题Thebasiccharacteristicofstaticflowinstabilityisthatafterthesystemundergoesaslightdisturbance,itwillspontaneouslytransferfromtheoriginalstableflowoperatingpointtoanotherstableflowoperatingpointorasmallfluctuationoperatingpoint.第4题Intheprocessoftwo-phaseflow,dynamicflowinstabilityispronetooccuratthetransitionpointoftheflowpattern—bubblyflowandannularflow.第5题Thefirsttypeofdensitywavepulsationinnaturalcirculationflowinstabilitymainlyoccursinareaswherethefluidisoflowdryness.Chapter8ChapterTest第1题Therequirementsforstructuralmaterialsinnuclearreactionengineeringare()AGoodphysicalandmechanicalpropertiesBWithstandthereactoranditsharshenvironmentCHightemperature,largetemperaturedifferenceandstrongradiationfieldDHasasmallneutroncapturecrosssection正确答案：ABC第2题Radiationinthereactormainlycontains()AalphaandbetaparticlesBgammaraysCNeutronsandfissionproductsDX-ray正确答案：ABC第3题Thecreepofamaterialreferstothe____causedbyaconstantloadataconstanttemperature.正确答案：:slowcontinuousplasticdeformation第4题Themechanicalpropertiesofreactorstructuralmaterialsthatweareconcernedaboutinclude:____,____,____,etc.正确答案：:​toughness正确答案：:fatiguestrength正确答案：:creep第5题Aseriesofcollidednucleiproducedbyahigh-energyparticleareusuallyconcentratedalongtheinitialmovementdirectionoftheparticle,andthisinfluencezoneiscalledthe

____.正确答案：:displacementpeak第6题Materialhardeningandembrittlementcausedbyparticleirradiationincludetheformationof____and____inthecrystallattice.正确答案：:vacancies正确答案：:nucleartransmutation第7题Theyieldstrength,tensilestrength,brittletransitiontemperature,toughnessandimpactstrengthofmetalswillincreaseunderfastneutronirradiation.第8题Metalmaterialsotherthanfuelmainlyreceiveirradiationfromalphaparticles.Chapter9ChapterTest第1题Whatfactorsshouldbeconsideredwhenchoosingcoolantformoltensaltreactor?ALowmeltingpoint,highboilingpointBSmallneutronreactioncrosssectionCGoodfuelcompatibilityDExcellentradiationperformanceElowcost正确答案：ABCDE第2题Thereactortypesofthefourth-generationreactorsincludeultra-hightemperaturegas-cooledreactors,gas-cooledfastreactors,____,____,____

and____.正确答案：:sodium-cooledfastreactors正确答案：:lead-cooledfastreactors正确答案：:moltensaltreactors正确答案：:supercriticalwaterreactors第3题Inthefourth-generationreactor,thereactortypethatrequiresadditionalmoderatorsisthe____,andthemoderatorusedis____.正确答案：:ultra-hightemperaturegas-cooledreactor正确答案：:solidgraphite第4题Amongthefourth-generationreactors,thereactortypesthatuseclosedfuelcyclesare____,____,

____,and____.正确答案：:moltensaltreactors正确答案：:gas-cooledfastreactors正确答案：:sodium-cooledfastreactors正确答案：:lead-cooledfastreactors第5题Thecoolantsthatcanbeusedasgas-cooledfastreactorsareheliumand____,whicharecharacterizedbygoodcompatibilitywiththematerialsinthereactor,smallneutronabsorptioncross-section,highoutlettemperature,

____S-CO2density,andeasycompression,Thetemperaturerequiredforthecycledoesnotneedtobetoohightobeasefficientastheheliumcycle.正确答案：:S-CO2正确答案：:high第6题Amongthefourth-generationreactors,thereactortypesthatusedifferentfuelformsare

____

and____.正确答案：:ultra-hightemperaturegas-cooledreactors正确答案：:moltensaltreactors第7题Forthefourthgenerationreactor,thegreaterthereactionpower,thebettertheeconomy.Chapter10ChapterTest第1题Thepotentialapplicationrequirementsofnuclearenergyare().AShipreactorBFloatingnuclearpowerplantCDeepseaspacestationDUUVELargeaerostat正确答案：ABCDE第2题Whataretheinevitableapplicationsofmarinenuclearpowerreactors?Amycountry'socean-goingcapabilitiesareweak,andshipenduranceisinsufficientBLackofoverseasbases,difficulttosupplyCMarineactivitiesarestrengthened,and