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