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單項(xiàng)選擇題

SOLAS vessels should be able to communicate with a shore station（）.

A.no matter where they are and what time it is
B.at scheduled time and in major ocean regions
C.at fixed time and position
D.when they get permission

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單項(xiàng)選擇題

General radio communications in the global system may（）ship’s safety.

A.be responsible for
B.have an impact on
C.command
D.give a guidance to

單項(xiàng)選擇題

The distress alert should（）the ship in distress.

A.identity
B.identical
C.identify
D.identification