A.SART
B.DSC
C.NBDP
D.RT
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A.keep silence
B.interfere with such communication
C.establish communication as directed and render such assistance as is required and appropriate
D.refuse communication as directed and render such assistance as is required and appropriate
A.any appropriate channel except public communication
B.any appropriate channel except for public communications
C.any appropriate channel besides public communication
D.any appropriate channel beside public communication
A.between ship stations and shore-based communication networks
B.concern the management and operation of ships
C.may have an impact of the safety on ships
D.all of A, B, C
A.The message can be directed to the desired location
B.The message can follow the earth‟s curvature
C.The quality of message can not be affected by climatic
D.the range of the message extend and the quality of reception is improved
A.are capable of following / distance
B.can follow / altitude
C.can hardly follow / shape
D.are unable following / angle
最新試題
Before GMDSS, if the radio officer on board is serious ill,（）.
Every lifeboat which is fitted with a fixed two-way vhf radiotelephone apparatus with（）which is separately mounted shall be provided with arrangements for sitting and securing the antenna effectively in its operating position.
We consider（）send a helicopter with medical facilities to the distress area.
The rescue coordination center may（）on stations which interfere with traffic.
Monitoring is especially important in a highly automated system which is dependent on careful（）procedure and format.
Every ship constructed on or after（）shall comply with all the applicable requirements of this chapter.
Radio communication（）for many years and helps to save tens of thousands of lives.
SOLAS ships shall be equipped with（）.
What following is not among the function of SOLAS ships?（）
If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.