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單項(xiàng)選擇題

The SART should have sufficient battery capacity to operate in the stand-by condition for（）hours and should continuously work for（）hours.

A.120/20
B.56/18
C.100/16
D.96/8

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單項(xiàng)選擇題

It is required that ships proceeding at sea should keep continuous watch on（）.

A.VHF channel16 and 13
B.appropriate DSC distress and safety frequency
C.INMARSAT TDM message channel
D.VHF channel 70 and channel 8

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