單項選擇題

Distress signal are always stored in the memory so as to start（）.

A.local-mode coverage
B.SAR operation
C.data process
D.continuous broadcast

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單項選擇題

When the power of SART is on, it will（）.

A.transmit distress signal
B.send response signal
C.transmit the signal of ship’s position
D.be started by X-band radar

單項選擇題

The source of energy fitted in GMDSS complying vessels must be（）.

A.the main source of energy
B.emergency source of electrical power
C.the reserve source of energy
D.all of above