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單項(xiàng)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 start by X-band radar

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單項(xiàng)選擇題

Distress traffic（）all messages relating to the immediate assistance required by the ship in distress, including search and rescue communications and signals for locating.

A.consists of
B.is consisted of
C.consisted of
D.are consisted of

單項(xiàng)選擇題

The transmission of a（）indicates that a ship is in distress and requires immediate assistance.

A.urgent traffic
B.distress alert
C.routine traffic
D.NAVTEX message