單項(xiàng)選擇題

A vessel sounding a fog signal of one short，one prolonged，and one short blast is indicating that the vessel is（）.

A.fishing
B.in distress
C.at anchor
D.not under command

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單項(xiàng)選擇題

A vessel showing a yellow light over a white light at night is a vessel（）.

A.engaged in piloting
B.towing astern
C.engaged in fishing
D.in distress

單項(xiàng)選擇題

A vessel shall，so far as practicable，（）traffic lanes.

A.avoid cross
B.avoid to cross
C.avoid crossly
D.avoid crossing

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