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【单选】______meansanareawithintheradiotelephonecoverageofatleastonaVHFcoaststationinwhichcontinuousDSCalertingisavailable,asmaybedefinedbyacontractingGovernment.A.SeaareaA1B.SeaareaA2C.satelliteD.RCC【单选】WhatistheminimuminformationwhichaDSCdistressalertshallcontain?A.Identificationofthestationindistress,thenatureofaccidentanditspositionB.IdentificationofthestationindistressandcallsignC.IdentityofthestationindistressandthenumberofcrewmembersD.Identityofthestationindistressandthekindofhelprequired【单选】ForshipsequippedwithanSES，itis______and______fortheoperatortosendadistressalert．A.easy／reliableB.difficult／cheapC.stable／compulsoryD.easy／expensive【单选】Itispreferableforshipslying______toreceiveMSItoensuresafenavigation.A.bothatseaandinportB.ininternationalwatersC.attheanchorageD.innarrowchannel【单选】TheabbreviationWWNWSmeans______.A.WorldWideNetworkWarningStationB.WorldWideNavigationalWarningServiceC.WorldWideNumberWatchStationD.WorldWideNetworkWatchService【单选】ShipsinareaA2willatleasttransmitaship-to-shorealerton______andsatelliteEPIRB.A.2182kHzB.2174.5kHzC.2187.5kHzD.156.8MHz【单选】WhichfrequencyisusedonlinefromCEStosatelliteintheINMARSATsystem?A.4GHzB.1.6GHzC.3GHzD.6GHz【单选】ItisoptionalformarinerstocombinetheSARTwith______.A.asatelliteSESB.afloat-freesatelliteEPIRBC.anEGCreceiverD.aNAVTEXreceiver【单选】IntheGMDSS,MaritimeSafetyInformationbroadcastwillmakeontwodedicatedsystems______providingnearcontinuousautomatedreceptiononboardships.A.INMARSATSafetyNETServiceandNAVTEXB.SafetyserviceandCOSPAS-SARSATC.DSCsystemandNavigationWarningServiceD.EGCsystemandNavigationWarningSystem【关联题】TheinitiationofadistressprioritymessageinmostSESismadesimpleforshipcrewmembersbyprovisionofa'distressbutton'orcodeintheSES.Onactivationofthisbutton,theequipmentinstantaneouslytransmitsadistressprioritymessage.Thissingleoperation,apushofthe'distressbutton',providesautomatic,directandassuredconnectiontoacompetentrescueauthority,therebyavoidingtheneedfortheSESoperatortoselectorkeyth
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