单项选择题

On-scene communications will normally take place between（）.

A.ship in distress and assisting units
B.NCS and RCC
C.RCCs and “on-scene commander” or “coordinator surface search”
D.ship in distress and coast station

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单项选择题

（）will form the basis for distress alerting and safety calling.

A.GMDSS
B.EGC
C.MSI
D.DSC

单项选择题

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

单项选择题

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