單項(xiàng)選擇題

A sweep oar is an oar that is（）.

A.generally shorter than the others and is used to steer with
B.is longer than the others and is used as the stroke oar
C.is raised in the bow of the boat for the steersman to steer by
D.longer than the others used for steering

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單項(xiàng)選擇題

A person who sees someone fall overboard should（）.

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

單項(xiàng)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.all is clear，it is safe to approach
D.a distress signal

A sweep oar is an oar that is（）.

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A person who sees someone fall overboard should（）.

A man aboard a vessel，signaling by raising and lowering his outstretched arms to each side，is indicating（）.

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