單項選擇題A man aboard a vessel，signaling by raising and lowering his outstretched arms to each side，is indicating（）.

A.danger，stay away
B.all is clear，it is safe to pass
C.the vessel is anchored
D.a distress signal


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1.單項選擇題If you see someone fall overboard from a vessel，you should（）.

A.immediately jump in the water to help the individual
B.call for help and keep the individual in sight
C.run to the radio room to send an emergency message
D.go to the control room for the distress flares

2.單項選擇題A sound signal of seven short blasts and one long blast given with the vessel’s sound system is（）.

A.Safety alarm
B.Distress alarm
C.Fire drill alarm
D.General emergency alarm

4.單項選擇題Is extra power available（）emergency while maneuvering?

A.for
B.in
C.during
D.to

5.單項選擇題A man aboard a vessel，signaling by raising and lowering his outstretched arms to each side，is indicating（）.

A.danger，stay away
B.all is clear，it is safe to pass
C.the vessel is anchored
D.a distress signal