航海GMDSS通信英语题库 答案.docx

航海GMDSS通信英语题库 答案.docx

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航海GMDSS通信英语题库答案

航海GMDSS通信英语题库+答案

　　　　　　航海GMDSS英语阅读500题单选题一第三部份英语阅读单项选择题　　1.　　IMOhasdecidedthatallshipsover300TGtmustbefittedwithaNAVTEXreceiver______.　　A.by01Feb1992　　　　B.by01Aug1993C.between01Feb1992and01Feb1999　　D.before01Feb19922.　　GMDSSistoprovide______withreliablecommunication.A.alllargepassengervessels　　　　B.freightersofmorethan300gtincoastalwaters　　C.allpassengershipsandcargoshipsengagedininternational-voyages　　D.allpassengershipsandcargoshipsof300gtupwardsinopensea　　3.　　Thecomplyingvesselscantransmitship-to-shoredistressalertsbyatleast______.　　A.Onemeans,whethersatelliteorterrestrialtechniques　　B.Twomeans,whethersatelliteorterrestrialtechniques　　　　C.Twoseparateandindependentmeans,eachusingdifferentradiocommunicationservices　　D.Twomeans,suchasMFDSCandHFDSC　　4.　　Thequalityofthemessagecanbeaffectedby______.　　A.climate　　B.sunshine　　C.humanbeings　　D.bothaandb5.　　Withinthepolarareasitis______toseeasatelliteingeo-stationaryorbit.　　A.impossible　　B.possible　　C.easy　　D.difficult6.　　TheInmarsatsystemisopenforuseby______countriesona　　non-discriminatorybasis.　　A.some　　B.lotsof　　C.many　　D.all　　7.　　WiththehelpofGMDSS______canbealertedtoadistressincidentassoonaspossible.　　A.allshipsinalargeseaarea　　B.onlytheseaauthoritiesashoreC.theSARunitsashoreandatsea　　D.theportradiosandthecoaststations8.　　InareascoveredbyInmarsatHFcanbeusedasan______tosatellitecommunications.　　A.alternation　　B.alternate　　C.alter　　D.alternative9.　　Whenreceivingadistressalert,theSARauthoritiesashoreandtheshipsinthevicinityoftheshipindistresswill______inacoordinatedsearchandrescueoperationwiththeminimumdelay.　　A.assist　　　　B.sendarescuevessel　　　　C.searchthedistressarea　　D.reachthedistresspositionatonce10.　　InwhichyearwastheCOSPAS-SARSATsystemestablished?

A.1980　　B.1981　　C.1979　　D.1982　　11.　　Itisquite______foranSESoperatortosendadistressalert.A.easyandexpensive　　B.simpleandcertain　　C.dangerousandstable　　D.difficultandcompulsory　　12.　　AnyshipsfittedwithSEScan______and_______throughthesatellitesystemwhensendingadistressalert.A.enterthesystem/contactanRCC　　　　B.accesstoINMARSAT/establishcontactwithaCES　　　　C.haveabsoluteprioritytoenterthesystem/makecontactwithaCES　　D.enterthesystemgradually/waitforrescue　　13.　　What’stheadvantagewhenusingthesatellites?

A.Themessagecanbedirectedtothedesiredlocation　　B.Themessagecanfollowtheearth’scurvature　　C.Thequalityofmessagecannotbeaffectedbyclimatic　　　　D.Therangeofthemessageextendandthequalityofreceptionisimproved14.　　TheDSCfrequencyfordistressalertinginAreaA2is______.A.2182KHZ　　B.　　C.2192KHZ　　D.15.　　Whatchannelisgeneralcommunicationused?

A.anyappropriatechannelexceptpubliccommunication　　B.anyappropriatechannelexceptforpubliccommunications　　C.anyappropriatechannelbesidespubliccommunication　　D.anyappropriatechannelbesidepubliccommunication16.　　whydosomestationskeepsilence?

　　A.Becausetheyarenotengagedinthedistresstraffic　　B.theywillaffectthetransmissionofthedistresstraffic　　C.Thepowersofthesestationsareveryweak　　D.Theyarenotinchargeofsearchandrescue　　17.　　Generalradiocommunicationsintheglobalsystemarethosebetween______concerningthemanagementandoperationoftheshipsandmayhaveimpactontheirsafety.　　A.SARpartyandtheshipindistress　　　　B.SARauthoritiesandtheshipindistressandsurvivalcraft　　C.Ashipstationandanycoaststation　　　　D.Shipstationsandshore-basedcommunicationnetwork　　18.　　Itisrequiredthatshipsproceedingatseashouldkeepcontinuouswatchon______.　　A.VHFchannels16and13　　B.AppropriateDSCdistressandsafetyfrequencies　　C.INMARSATTDMmessagechannel　　D.VHFchannel70andchannel8　　19.TheARQmodeshouldbeapplied______.A.whentwostationscommunicatewitheachother　　B.inanyradiosystemandatanytime　　C.whenoneshipsendsamessagetoanotherstation　　D.forcommunicationamongsomestations　　20.Whatinformationwilladistressalertcontain?

A.natureofdistress　　　　B.typeofassistancerequired　　　　C.courseandspeedandtimeatwhichtheinformationwasrecorded　　D.A,B,Careallright　　21.Aradiodeterminationsystembasedonthecomparisonofreferencesignalswithradiosignalsreflected,orretransmittedfromthepositiontobedetermined,is______.　　A.DF　　B.RadarSystem　　C.DSCSystem　　D.COSPAS-SARSAT22.Withthehelpofmoderntechnology,shipsareabletoreceiveautomatedbroadcastofsafetymessages______.　　A.bydayoratnight　　B.almostroundtheclock　　C.somewhatandsometime　　D.fromsunriseandsunset　　23.TheWWNWSisacoordinatedglobalserviceforthebroadcastbyradioofvitalinformationon______tomarinenavigation.　　A.ship’smovement　　B.safety　　C.ship’smanagement　　D.hazards　　24.distressalertswillberelayedonthe______whentheRCCconsidersitnecessary.　　A.dedicatedsystem　　B.MSIbroadcasts　　C.518KHZ　　D.channel1625.Thefrequency518KHZwillbeusedtotransmit______and______waningsinNAVTEX.　　A.navigational/typhoon　　B.traffic/meteorological　　C.marine/hurricane　　　　D.navigational/meteorological26.ItispossibleforshipstoreceivesafetymessagetransmittedbyNavtexstation______.　　A.inanyINMARSATregions　　B.ineachNAVTEXarea　　C.atanydistance　　　　D.inAreasA3andA4　　27.ANavtexstationineachNAVAREAisusuallyallowedtohave______fortransmission.　　A.10minutesevery4hours　　B.halfanhoureveryotherhour　　C.irregularperiodoftime　　D.5minuteseverytwohours28.ThedifferencebetweeninternationalandnationalNavtexServiceislimitedto______.　　A.frequencyallocated　　　　B.bothlanguageandfrequency　　C.languageused　　　　D.transmissionpowerandtime29.Navtextransmitteridentificationcharacter______isusedtoidentifythe

　　　　　　broadcastswhicharetobeacceptedbythereceiverandthosearetoberejected.　　A.B2　　B.B1　　C.MAR　　D.NNN　　30.ThereceivingstationscanusetheB2characterto______different,classesofmessages.　　A.identify　　B.Correct　　C.Reject　　D.Printout31.IfEGCreceiversharesasameantennawithInmarsatSES,itmeansthatitcanreceiveMSI______.　　A.fromanyInmarsatsatellite　　B.fromanyappropriateNavtexandEGCstation　　C.viathesatellitetheSESistrackingD.fromanyRCCandcoaststation32.WhyshouldtheSESoperatorsbeverycarefulwhentheshipenterstheareawherethreeoceanregionsoverlap?

Because______.A.theweatherisalwaysterrible　　B.theconditionthereiscomplicatedC.thesignalsaretoostrong　　　　D.theirSESmayreceivethesignalsfromunwantedsatellite　　33.TheestablishmentofINMARSATasanindependentorganizationmarkedagreatstepforwardformaritimeradiocommunications.Whatdoes“markedagreatstep”meaninthesentence?

　　A.Torunfasterthanever　　B.Togoforward　　C.Tomarchwithoutstopping　　D.Asignificantsymbolofagreatimprovementinmaritimecommunication.34.InadditiontomeetingtherequirementofSeaareaA1,everyshipengagedonvoyageinSeaareaA2shallbeprovidedwith______.　　A.MFradioinstallationwithDSC　　B.SES　　　　C.MF/HFradiotelephoneinstallation　　D.watchreceiver35.______isaspacesystemusingoneormoreartificialearthsatellites.　　A.satellitenetwork　　B.SatelliteLink　　C.INMARSAT　　D.SatelliteSystem　　36.Thesatellitesoverthemajoroceanregionscovertheglobe______.二　　A.besidesthepolarregions　　B.includingtheNorthPoleandtheSouthPole　　C.above70Nandbelow70S　　D.asfarnorthandsouth70　　37.Therearesomeback-upsatellitesintheeventoffailure.Iftheoperationalsatelliteisoutofwork,______.　　A.communicationsinthewholesystemwillstop　　B.theglobalsystemwillbedamaged　　C.theback-uponewilltakeitsplace　　D.thewholesystemwillnotwork　　38.ThepositioniftheIORsatelliteintheINMARSATsystemis______abovetheequator.　　A.　　B.178E　　C.　　D.54W39.TheGMDSSdefinesfourseaareabasedonthe______.　　A.locationandcapacityofthefacilitieslocatedonboardships　　B.Positionandtypeofasinceresintion　　　　C.Capacityandlocationofshorebasedcommunicationfacilities　　D.Positionandcapacityofmobilecommunicationstations.　　40.TheNCSofINMARSAT-AsystemintheIORisin______.　　A.Goonhilly,UK　　　　B.Yamaguchi,JapanC.Perth,Australia　　D.Southbury,USA　　41.TheNetworkCoordinationstationfortheINMARSAT-AcoaststationsinthePacificoceanregionisin______.　　A.Yamaguchi,Japan　　B.Beijing,China　　C.Nakhodka,Russia　　D.Perth,Australia　　42.AnyshipwithSEScan______and______throughtheInmarsatsatelliteswhensendingadistressalert.　　A.enterthesystemrapidly/waitforrescue　　　　B.haveanabsoluteprioritytoenterthesystem/contactwithaCES　　C.establishcontactwiththeRCC/entertheport　　D.enterthesystemgradually/gettherescue　　43.Amobileearthstationinthemaritimemobile-satelliteservice,whichislocatedonboardship,iscalled______.　　A.anLES　　B.anSES　　C.ashipstation　　D.aLandMobileStation　　44.Aftersuccessfulcommissioning,the______willpermittheSESaccesstosystem.　　A.INMARSAT　　B.IMO　　C.MSC　　D.CES　　45.Ingeneral,therearetwopartsinanSES,Oneoftheseisantennaeqipmentalsoreferredtoas______.　　A.BDE　　B.UDE　　C.AEP　　D.ADE　　46.Toestablishacommunicationchannelforthetele