A.300
B.400
C.500
D.600
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A.on the bridge
B.in the coast station
C.on the forecastle
D.on starboard side
A.subject for
B.liable to
C.easy to meet
D.always encounter
A.NBDP/VHF radio
B.Inmarsat safetyNet/NAVTEX
C.Safety service / Inmarsat-A
D.Long range / short range
A.FEC and ARQ
B.satellite and terrestrial communications
C.radio and telex
D.NBDP
A.by day or at night
B.almost round the clock
C.somewhat and sometime
D.from sunrise to sunset
最新試題
Can MF/HF radiotelephone receive the MSI sent from the coast stations alone?（）
Radiotelephony communication or radio telex communication or both will be carried out by terrestrial or satellite means,（）the equipment fitted on ship and the area in which the incident occurs.
SafetyNet is an international service for the broadcast and automatic reception of MSI by means of direct-printing through（）system.
Monitoring is especially important in a highly automated system which is dependent on careful（）procedure and format.
At least two two-way VHF radiotelephone apparatus shall be provided on every cargo ship of（）tons gross tonnage and upwards but less than 500 tons gross tonnage.
Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.
We consider（）send a helicopter with medical facilities to the distress area.
Radio communication（）for many years and helps to save tens of thousands of lives.
International Navtex service means the coordinated broadcast and automatic reception on（）khz of maritime safety information by narrow-band direct-printing telegraphy using English language.
Please use（）for（）.