A.the weather is always terrible
B.the condition there is complicated
C.the signals are too strong
D.their SES may recive the signals from unwanted satellite
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A.international NAVTEX Service
B.FleetNET Service
C.SafetyNet Service
D.WWNWS
A.can suppress
B.can be suppressed
C.can not be suppressed
D.are to be suppressed
A.frequency allocated
B.both language and frequency
C.language used
D.transmission power and time
A.10 minutes every 4 hours
B.half an hour every other hour
C.irregular period of time
D.5 minutes every two hours
A.on the bridge
B.in the coast station
C.on the forecastle
D.on starboard side
最新試題
SafetyNet is an international service for the broadcast and automatic reception of MSI by means of direct-printing through（）system.
Distress traffic is the communication（）between the station in distress and the ships, aircraft, coast radio stations, coast earth stations and rescue centers participating in the rescue work.
Monitoring is especially important in a highly automated system which is dependent on careful（）procedure and format.
Ship-to-ship distress alerting should be conducted by（）.
All coast radio stations（）DSC installed for VHF and HF.
Every lifeboat which is fitted with a fixed two-way（）radiotelephone apparatus with an antenna which is separately mounted shall be provided with arrangements for sitting and securing the antenna effectively in its operating position.
The vessel has stayed in port for seven days because she needs（）.
Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.
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.
Radio beacon can be activated（）in case of distress.