大连新题.docx

大连新题.docx

《大连新题.docx》由会员分享，可在线阅读，更多相关《大连新题.docx（79页珍藏版）》请在冰豆网上搜索。

大连新题

1.Inthetwostrokedieselengine,itisdesignedsothattheoilimpingementistimedtoproceedonlyonthepistonringbeltduring______.

AcompressionstrokeBsuctionstrokeCexpansionstrokeDexhauststroke

2Inafourstrokeengine,whichprocesslaststhelongerperiod?

AexhaustandsuctionprocessBsuctionandcompressionprocess

CcombustionandexhaustprocessDworkingandexhaustprocess

3.Onwhatdoyoudependhavingtheaircoolerofmainenginechemicallywashed?

AincreasedairpressuredifferencebeforeandaftaircoolerBreducedexhausttemperatureinallcylinders

CreducedtemperaturedifferencebetweenwaterinletandoutletDbothAandC

4Whenoccurringafireinthescavengeairbox,thefollowingmeasuresshouldbetakenexceptfor_______.

AreducingspeedtoSLPWandaskingbridgeforpermissiontostopBstoppingthefueloilsupply

Cswitching-ontheauxiliaryblowers

Dputtingthescavengeairboxfireextinguishingequipmentintofunction

5Continuoussurgingofturbochargercanbecausedby______.①crashstopofengine;②increasedbackpressureafterTCh;③fouledordamagedturbinenozzlering.

AallarecorrectB②and③arecorrectCnoneoftheaboveiscorrectD①onlyiscorrect

6.Whenasuddenincreaseinsteamdemandoccursfromtheboiler,thewaterlevelinthedrumatthehigherpressurewill_______.

ArisequicklyBriseslowlyCdropquicklyDdropslowly

7.Onmodernships,centrifugalpumpwithaself-primerhasreplacedreciprocatingpumpasbilgepumpbecause______.

Acentrifugalpumpischeaperthanreciprocatingpump

Bthesizeofcentrifugalpumpwithsamecapacityissmallerthanthatofreciprocatingpump

CcentrifugalpumpmakesmaintenanceeasierthanreciprocatingpumpdoseDalloftheabove

8.Whichcauseoffollowingwillnotleadtorefrigerationplantshort-cycle?

AlackofrefrigerantBrefrigerantwithmuchwaterCsetdefectivelylowpressurerelayDnocoolingwater

9.Toreceiveoilresiduesfromthepurificationoffuelandlubricatingoilsinthemachineryspaces,whatkindoftank（s）shouldbeprovidedonboard?

AbilgetankBsludgetankCoverflowtankDoilcollectingtank

10.Theoildischargemonitoringsystemintheoiltankervesselsisusedfordetectingtheamountofoildischargedoverboardtoensurethatitdoesnotexceed______.

A15liters/nauticalmileB30liters/nauticalmileC60liters/nauticalmilD100liters/nauticalmile

11.Whichofthefollowingfunctionsisnotoneofthefunctionsofairconditioner?

ArefreshingtheairBmakingpersonupsetCadjustingtheairhumidityDadjustingtheairtemperature

12.Whichofthefollowingstatementsisnottrueconcerningsymptomofafireinthescavengeairbox?

AanincreaseintheexhausttemperatureoftheaffectedcylinderBtheturbochargermaysurge

CtheexplosionpressureinallcylinderswillriseviolentlyDsmokefromtheturbochargerairinletfilterwillbeseen

13.Whattypeofelectricmotorismostcommonlyusedonboardship?

Anon-synchronouselectricmotorBsynchronouselectricmotor

CfullyenclosedelectricmotorDwatertightelectricmotor

14.Accordingtotheprincipleoffourstrokedieselengine,whatisthenumberofitsefficientworkstrokeperrevolution?

A1/2B1C2D3

15.Whatisheadtankintheclosedcoolingwatersystemusedfor?

AforthereleaseofairfromthecoolingwaterBprovidingexpansionroomforheatedcoolingwater

CaplaceforimplementingwaterandwatertreatmentagentDalloftheabove

16.Thefunctionofsynchronouscompensatingmachineisto______.

AimprovepowerfactorBreducevoltageoscillation

CincreasetheinsulationofcircuitsDeliminateregeneratedmagneticfields

17.同第5题

18.Afewspotsofturbochargersurgingcanbecausedby_______.①crashstopofengine;②rapidincreaseofenginespeed

A①onlyiscorrectB②onlyiscorrectCboth①and②arecorrectDneither①or②arecorrect

19.Withoneormorecylindersoutofoperation,theenginespeedmustbereducedbecause______.

Ainsuchcases,theairsupplyisnolongeroptimal,thethermalloadwillbehigher

BgovernorhuntingwilloccurCtorsionalvibrationaswellasothermechanicalvibrationsmayoccur

Dalloftheabovearecorrect

20.ThenameplateofanACnon-synchronousmotorshowsthatrunningspeedis1460r/min.frequency50Hz.Youcaninferthatthenumberofmagneticpolesis______.

A2B4C6D8

21.“380V/220VY/Δ”notedonthenameplateofanon-synchronousmotormeansthat______.

Athearmatureterminalsofthemotorshouldbeconnectedinstarformationwhenvoltageofpowersupplyis380V

Bthearmatureterminalsofthemotorshouldbeconnectedindeltaformationwhenvoltageofpowersupplyis220V

CbothAandBarecorrectDthearmatureterminalsofthemotorshouldbeconnectedinreversewaysofAandB

22.TheinitialvoltageofSelf-excitationgeneratorisgenerallysetupby_______.

AresidualmagnetismBvoltageregulatorCelectricalcurrentforexcitationDtheotherrunninggenerator

23.TheDCexcitationtothefieldofBrushlesssynchronousgeneratorisgenerallyproducedby______.

AanexciterdrivenbythesameprimeshaftwiththegeneratorBanexciterdrivenbyexternalprimemover

CgeneratoritselfDeitherAorB

24.同第6题

25.Whenasuddenincreaseinsteamdemandcomestonormal,thedrumpressurewill______andwaterlevelinthedrumwill______.

Arise,risealsoBrise,dropCdrop,riseDdrop,dropalso

26.Whichofthefollowingequipmentisnotpollutionpreventionequipment?

AoilywaterseparatorBsewagetreatmentplantCfueloilseparatorDincinerator

27.Whichofthefollowingismostsuitableforanoilywaterseparator?

AreciprocatingpumpBvanepumpCmonopumpDaxial-flowpump

28.Whichofthefollowingpumpswillmostaffectoilywaterseparatorperformanceandgivetheworstresult?

AreciprocatingpumpBvanepumpCscrewpumpDcentrifugepump

29.Onmodernships,centrifugepumpwithaself-primerhasreplacedreciprocatingpumpasbilgepumpbecause_______.

Acentrifugepumpischeaperthanreciprocatingpump

Bthesizeofcentrifugepumpwithsamecapacityissmallerthanthatofreciprocatingpump

CcentrifugepumpmakesmaintenanceeasierthanreciprocatingpumpdoesDalloftheabove

30.Toreceiveoilresiduesfromthepurificationoffuelandlubricatingoilsinthemachineryspaces,whatkindoftanksshouldbeprovidedonboard?

AbilgetankBsludgetankCoverflowtankDoilcollectingtank

31.Accordingtotheprincipleoftwostrokedieselengine,whatisthenumberofitsefficientworkstrokeperrevolution?

A1/2B1C2D3

32.Therewillusuallybesummariesordailyaccounttablesforheavyoil,dieseloil,lubricatingoil,andfreshwater,whichwillbecompiled______.

AatthebeginningofeverywatchBatthebeginningoffirstwatcheveryday

CatthecompletionofeverywatchDatnooneveryday

33.However,whereimmediateactionisnecessarytoensuresafetyoftheship,itsmachineryandcrew,itmustbetakenbytheengineerincharge.Whatdoes“it”meaninthesentenceabove?

AsafetyBtheship,itsmachineryandcrewCimmediateactionDtheengineerincharge

34.Whatisusedforpreventingpollutiondamagetotheseafromships?

AMARPOL73/78BSOLAS74CSTCW78/95DISPS2002

35.Duringtoursofinspectioninthemachineryspace,youfoundafireonarunninggenerator,whatshouldyoudofirst?

AinformchiefengineerofficerimmediatelyBstopthegenerator

CletthedutyofficerinbridgedeterminehoetodoDwaitforhelp

36.Whichcauseofthefollowingwillnotleadtorefrigerationplantshort-cycle?

AlackofrefrigerantBrefrigerantwithmuchwater

CsetdefectivelylowpressurerelayDnocoolingwater

37.Iftwofuelservicetanksareinstalled,theemptytankshouldbepumpedupdirectlyitisempty.Whatisthemeaningof“directly”inthesentenceabove?

AatonceBassoonasCquicklyDstraight

38.Fromviewpointofpractice,itissometimesimportanttodetectabnormalhappeningsintherunninggearby______.

AakeensenseofhearingBrichtheoryCcommunicatingabilitywithothersDrepetitionwork

39.Whereisthecoolingwaterfromthecompensatingtankinthecoolingwatersystemofmainengineleadto?

AdischargesideofthecentrifugalpumpsBsuctionsideofthecentrifugalpumps

CthelowestpointofthecoolingwatersystemDinletofthemainengine

40.Crudeoilwashingofcargotankshasthefollowingadvantagesexceptfor_______.

AreducingtheerosionofthecargotanksBincreasingthetotalquantityofoiltocarry

CreducingthequantityofwatercontainedinoilDreducingcargodischargetime

41.Whichsystemsinthehydraulicsystemsofcranealwaysholdssinglesideofload?

AhoistingsystemonlyBhoistingsystemandluffingsystem

ChoistingsystemandslewingsystemDslewingsystem

42.Onwhatdoyoudependhavingthesircoolerofmainenginechemicallywashed?

Aincreasedairpressuredifferencebeforeandaftaircooler

Breducedexhausttemperatureinallcylinders

CreducedtemperaturedifferencebetweenwaterinletandoutletDBothAandC

43.Whichoneofthreeelementsforafireinatankervesselismostdifficulttoeliminate（isolate）?

AacombustibleelementBenergy（resourcesforignition）tostartthecombustion

CoxygentosupportthecombustionDbothAandCarecorrect

44.Thecranejibisraisedandloweredbymeansof______.

AamooringwinchBahoistingwinchCaslewingwinchDaluff9ingwinch

45.Thegaugepressureinsideacontaineris-0.5kg/cm2,thenwhatistheabsolutepressureexertedtotheinsidesurfaceofthiscontainer?

A0.05MpaB0.95MpaC1.05MpaD0.5Mpa

46.Aprocessofcomparingthe