轮机英语关联题20篇.docx
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轮机英语关联题20篇.docx
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轮机英语关联题20篇
41关联题(关联题题干下有4个小题,每小题4个选项)
Withmanysmallpackageboilers,theautomaticcontrolsequenceusuallyensuresthattheboilerfireisinitiallyignitedfromadieseloilsupply,andchangedovertotheusualsourcewhenignitioniscompleted.Withgoodmanagement,tofacilitatesubsequentstartingfromcold,thefuelsystemoflargeboilerswillhavebeenflushedthroughwithdieseloilwhentheboilerwasonlightdutyimmediatelypriortobeingsecured.Whenburningsuchdieselfuelitisessentialforsafetythatonlythecorrect(small)burnertipshouldbeused.Itshouldbekeptinmindthatiffiredoesnotlight,immediatelyshutofffuelandventfurnace.
Completeignitionoffuelinthefurnaceisessential.Theburnerflame,thesmokeindicatorandthefunnelshouldbefrequentlyobserved.Withsatisfactorycombustion,theflameshouldappearincandescent(白热的)withanorangeshadeattheflametip,andafaintbrownishhazeshouldshowatthefunnel.Ifonfirstignitiontheflameisuncertain,badlyshapedandseparatesfromtheprimaryswirler,momentaryopeningorclosingofairregistermaycorrect.
75.Smallpackageboilerswilluse_______whilebeinglitup.
A.theusualsourceofoilB.fueloil
-C.dieseloilD.mixtureoffueloilanddieseloil
76.Afterlargeboilersbeingsecured,thefuelinthefeedinglinewillbe____.
A.theusualsourceofoilB.fueloil
-C.dieseloilD.mixtureoffueloilanddieseloil
77.Iflargeboilerswerenotlitup,_____.
A.feedwatertonormallevel
-B.stopfuelsupplyimmediatelyandpurgethefurnace
C.lighttheboileragain
D.resettheburner
78.Anindicationforagoodcombustionis______.
A.whitesmokeB.brownhazeinthefunnel
-C.orangeflametipD.swirloilspray
44关联题(关联题题干下有4个小题,每小题4个选项)
Themainstartingvalve(automaticvalve)isoperatedbyapneumaticactuator,andsimilaractuatorcontrolsarefittedforslowturningandtothetimingvalves.Themainstartingvalvecanbelockedshutandthismustbedonebeforetheengineturninggearisengaged.Whenthisvalveisopen,airpassesthroughanon-returnvalveandflamearrestertothemainmanifoldsupplyingpressuretothecylindervalves,oneofwhichisfittedtoeachcylinderoftheengine.
Thecylinderairstartvalvesarenormallyheldclosedbyacompressionspringtogetherwithcylinderpressureactingoverthevalvelid.Airfromthemanifoldentersthesevalveswhereitformsapressurebalancebetweentheundersideofthevalvelidandabalancepistonofequalareaonthevalvespindle.Consequentlythisdoesnotcausethevalvetoopen.
Cylindervalvesareopenedwhenoperatingair,transmittedfromthedistributor,appliespressuretothelargeroperatingpistononthevalvespindle.Asthevalveisforcedopen,startingairfromthemanifoldentersthecylinder,applyingpressureonthepistonandcausingtheenginetorotateinthecorrespondingdirection.Toclosethecylindervalvestheconnectionfromthedistributorisopenedtoatmosphere,allowingthespringtoclosethevalveandreturntheoperatingpiston.
75.Thetimingvalves(inthefirstparagraph)referto__________.
A.thevalvesforslowrunningB.fuelvalves
C.thedistributorD.notmentioned
76.Afterthemainstartingvalveopens,airwillnotsupplyto__________.
A.theflamearresterB.eachcylindervalve
C.anon-returnvalveD.apneumaticactuator
77.Thebalancepistonusedonacylinderairstartvalveisto___________.
A.increaseactingarea
B.keeppressurebalanceandhelpthevalveclosebeforeoperatingairapplied
C.increasetheforceandhelpthevalveopenaftertheoperatingairapplied
D.causethevalvetoopen
78.Aftertheenginebeingstarted,theairinthedistributorwill__________.
A.beventedtoopenair
B.beleadedtothecorrespondingcylinder
C.betrappeduntilenginestops
D.returntoairreservoir
45关联题(关联题题干下有4个小题,每小题4个选项)
第一组
Scavengeportinspectionprovidesusefulinformationabouttheconditionofcylinders,pistonsandrings,atlowexpense.Theinspectionconsistsofvisuallyexaminingthepiston,theringsandthelowerpartofthecylinderliner,directlythroughthescavengeairports.Torescuetheriskofscavengeboxfire,removeanyoilsludgeandcarbondepositsinthescavengeairboxandreceiverinconnectionwiththeinspection.
Theportinspectionshouldbecarriedoutatthefirststopafteralongvoyage,e.g.byanchoringifpossible,toobtainthemostreliableresultwithregardtotheeffectivenessandsufficiencyofthecylinderlubricationandthecombustioncycle(completeorincomplete).
Amisleadingresultmaybeobtainediftheportinspectioniscarriedoutafterarrivalatharbor,sincemaneuveringtothequayandlow-loadrunning,e.g.riverorcanalpassage,requiresincreasedcylinderoildosage,i.e.thecylindersareexcessivelylubricated.Further,duringlowload,thecombustioncyclemightnotbeaseffectiveandcompleteasexpected,duettotheactualfueloilqualitiesandservice(running)conditionofthefuelinjectionequipment.Itishighlyrecommendedtotaketheinformationintoconsideration.
D89.Thecomponentsofanengineinvolvedinnormalscavengeportinspectioncomprise,__________.①thepiston②pistonrings③thelowerpartofthecylinderliner④thefuelinjector
A.①②B.①②③④C.②③D.①②③
B90.Ifthescavengeboxhadtoomuchoilsludgeandcarbondeposits,whatwouldoccur?
A.excessivelycylinderoilconsumptionB.thescavengeboxfire
C.thecrankcaseexplosion
D.excessivewearofthecylinderliner
A91.Inordertoobtainthemostreliableresultwithregardtotheeffectivenessandsufficiencyofthecylinderlubricationandthecombustioncycle,whenshouldthescavengeportinspectionbecarriedout?
A.atthefirststopafteralongvoyage,e.g.byanchoringifpossible
B.atthefirststopafterarrivalatharbor
C.atthefirststopafterlowloadrunning
D.atthefirststopafterpassingriverorcasualpassage
B92.Underwhatconditionthatthescavengeportinspectioncangainamisleadingresult?
①afterpassedthroughPanamaCanal②aftergotalongsideshanghaiquay③afterarrivalshanghairoadstead(外锚地)
A.②③B.①②
C.①②③D.①
第二组
Currentregulationswithregardtothedischargeofoilywatersetlimitsofconcentration15partspermillion.Amonitorisrequiredtomeasurethesevaluesandprovidebothcontinuousrecordsandanalarmwherethepermittedlevelisexceeded
Theprincipleusedisthatofultra-violetfluorescence.Thisistheemissionoflightbymoleculethathasabsorbedlight.Duringtheshortintervalbetweenabsorptionandemission,energyislostandlightofalongerwavelengthisemitted.Oilfluorescesmorereadilythanwaterandthisprovidesthemeansforitsdetection.
Asampleisdrawnofffromtheoverboarddischargeandpassesthroughasamplecell.Anultra-violetlightisdirectedatthesampleandthefluorescenceismonitoredbyaphotoelectriccell.Whereanexcessivelevelofcontaminationisdetectedanalarmissoundedanddivertingvalvesareoperated.Thedischargeliquidisthenpassedtoasloptank.
D93.Thepassageismainlyabout_________.
A.oilywaterseparator
B.currentregulationsrelatedtooilpollution
C.oilinwatermonitor
D.theprincipleofultra-violetfluorescence
C94.Amonitorcanobtainallofthefollowingfunctionsexcept__________.
A.measuringoilcontentvalues
B.providingcontinuousrecords
C.loweringtheoilcontentbelow15ppm
D.providinganalarmunitwarningoflevelsofdischargeinexcessof15ppm
B95.Fromthepassage,wecanlearnthattheultra-violetfluorescenceisakindof__________.
A.oilsampleB.light
C.photoelectriccellD.alarmunit
C96.Asampleisdrawnofffrom__________andpassesthroughasamplecell.
A.bilgewaterB.dischargeofoilseparator
C.sloptankD.dischargeofoilywaterseparator
二.关联题(关联题干下有4个小题,每小题4个选项)
第一组
PortStateControl(PSC)istheinspectionofforeignshipsinnationalportsforthepurposeofverifyingthattheconditionoftheshipanditsequipmentcomplywiththerequirementsofinternationalconventionsthattheshipismannedandoperatedincompliancewithapplicableinternationallaws.
TheprimaryresponsibilityforensuringthatashipmaintainsastandardatleastequivalenttothatspecifiedininternationalconventionsrestswiththeflagStateandifallflagstatesperformedtheirdutiessatisfactorilytherewouldbenoneedforportstatecontrol.Unfortunatelythisisnotthecaseasevidencedbythemanymarineaccidentsaroundtheworld-hencetheneedforadditionalcontrol.
TheauthorityforexercisingPSCisthenationallawbasedonrelevantconventions.ItisthereforenecessaryforaportStatetobePartytothoseconventionsandtohavepromulgatedthenecessarylegislationbeforeexercisingPSC.Inaccordancewiththeprovisionsoftheapplicableconventions,Partiesmayconductinspectionsofforeignshipsintheirports.TheyarePortStateControlOfficers(PSCO).
B89.ThepurposeofPSCis_________.
1)tocheckandinspectforeignships
2)toverifytheconditionofashipincompliancewithrequirementsofinternationalconventions.
3)tomakesurethattheshipismannedandoperatedwell
4)todetainships
A.1)+2)B.2)+3)C.1)+3)D.1)+2)+3)+4)
C90.Whowillberesponsibleforensuringthatashipmaintainsastandardatleastequivalenttothatspecifiedininternationalconventions?
A.PSCOsB.ShipownersC.FlagstatesD.Portstates
A91.BeforeexercisingPSC,aportstateshould__________.
A.becomeacontractingPartyandpromulgateregulationsforimplementingPSC
B.informshipowners
C.establishprocedures
D
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