单项选择题

The rescue coordination center may（）on stations which interfere with traffic.

A.keep silence
B.forbid transmission
C.change information
D.impose

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Particular care should be（）in selecting CESs in areas where Ocean Regions overlap.

A.taken
B.take
C.took
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Before GMDSS, if the radio officer on board is serious ill,（）.

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What following is not among the function of SOLAS ships?（）

A.receive shore-to-ship distress alerting
B.transmit ship-to-shore distress alerting
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D.transmit and receive locating signals