GMDSS通信英语题库500题Word文档格式.docx
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GMDSS通信英语题库500题Word文档格式.docx
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C.Twoseparateandindependentmeans,eachusingdifferentradiocommunicationservices
D.Twomeans,suchasMFDSCandHFDSC
4.
Thequalityofthemessagecanbeaffectedby______.
A.climate
B.sunshine
C.humanbeings
D.bothaandb
5.
Withinthepolarareasitis______toseeasatelliteingeo-stationaryorbit.
A.impossible
B.possible
C.easy
D.difficult
6.
TheInmarsatsystemisopenforuseby______countriesonanon-discriminatorybasis.
A.some
B.lotsof
C.many
D.all
7.
WiththehelpofGMDSS______canbealertedtoadistressincidentassoonaspossible.
A.allshipsinalargeseaarea
B.onlytheseaauthoritiesashore
C.theSARunitsashoreandatsea
D.theportradiosandthecoaststations
8.
InareascoveredbyInmarsatHFcanbeusedasan______tosatellitecommunications.
A.alternation
B.alternate
C.alter
D.alternative
9.
Whenreceivingadistressalert,theSARauthoritiesashoreandtheshipsinthevicinityoftheshipindistresswill______inacoordinatedsearchandrescueoperationwiththeminimumdelay.
A.assist
B.sendarescuevessel
C.searchthedistressarea
D.reachthedistresspositionatonce
10.
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.Therangeofthemessageextendandthequalityofreceptionisimproved
14.
TheDSCfrequencyfordistressalertinginAreaA2is______.
A.2182KHZ
B.2174.5KHZ
C.2192KHZ
D.2187.5KHZ
15.
Whatchannelisgeneralcommunicationused?
A.anyappropriatechannelexceptpubliccommunication
B.anyappropriatechannelexceptforpubliccommunications
C.anyappropriatechannelbesidespubliccommunication
D.anyappropriatechannelbesidepubliccommunication
16.
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-SARSAT
22.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.channel16
25.Thefrequency518KHZwillbeusedtotransmit______and______waningsinNAVTEX.
A.navigational/typhoon
B.traffic/meteorological
C.marine/hurricane
D.navigational/meteorological
26.ItispossibleforshipstoreceivesafetymessagetransmittedbyNavtexstation______.
A.inanyINMARSATregions
B.ineachNAVTEXarea
C.atanydistance
D.inAreasA3andA4
27.ANavtexstationineachNAVAREAisusuallyallowedtohave______fortransmission.
A.10minutesevery4hours
B.halfanhoureveryotherhour
C.irregularperiodoftime
D.5minuteseverytwohours
28.ThedifferencebetweeninternationalandnationalNavtexServiceislimitedto______.
A.frequencyallocated
B.bothlanguageandfrequency
C.languageused
D.transmissionpowerandtime
29.Navtextransmitteridentificationcharacter______isusedtoidentifythebroadcastswhicharetobeacceptedbythereceiverandthosearetoberejected.
A.B2
B.B1
C.MAR
D.NNN
30.ThereceivingstationscanusetheB2characterto______different,classesofmessages.
A.identify
B.Correct
C.Reject
D.Printout
31.IfEGCreceiversharesasameantennawithInmarsatSES,itmeansthatitcanreceiveMSI______.
A.fromanyInmarsatsatellite
B.fromanyappropriateNavtexandEGCstation
C.viathesatellitetheSESistracking
D.fromanyRCCandcoaststation
32.WhyshouldtheSESoperatorsbeverycarefulwhentheshipenterstheareawherethreeoceanregionsoverlap?
Because______.
A.theweatherisalwaysterrible
B.theconditionthereiscomplicated
C.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.2187.5KHZwatchreceiver
35.______isaspacesystemusingoneormoremoreartificialearthsatellites.
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.64.5E
B.178E
C.15.5W
D.54W
39.TheGMDSSdefinesfourseaareabasedonthe______.
A.locationandcapacityofthefacilitieslocatedonboardships
B.Positionandtypeofasinceresintion
C.Capacityandlocationofshorebasedcommunicationfacilities
D.Positionandcapacityofmobilecommunicationstations.
40.TheNCSofINMARSAT-AsystemintheIORisin______.
A.Goonhilly,UK
B.Yamaguchi,Japan
C.Perth,Australia
D.Southbury,USA
41.TheNetworkCoordinationstationfortheINMARSAT-AcoaststationsinthePacificoceanregionisin______.
A.Yamaguchi,Japan
B.Beijing,China
C.Nakhodka,
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