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
（）will form the basis for distress alerting and safety calling.
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.
All coast radio stations（）DSC installed for VHF and HF.
In case a ship is in emergency or distress in any of 4 areas, it is required to use the continuous（）alert.
Every ship constructed on or after（）shall comply with all the applicable requirements of this chapter.
Radio beacon can be activated（）in case of distress.
SOLAS ships shall be equipped with（）.
The quality of EGC messages is（）affected by the position of the ship, the time of reception and climatic conditions.
Can MF/HF radiotelephone receive the MSI sent from the coast stations alone?（）
（）by an ice-breaker, it is important to maintain a continuous listening watch on the appropriate VHF channel and to maintain a proper look-out for sound and visual signals.