單項選擇題

Especially in adverse weather,risk of collision with an offshore supply vessel increase when the vessel is moored to what side of the unit?（）.

A.Upwind
B.Downwind
C.Crosswind
D.Downcurrent

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單項選擇題

Every ship should hoist（）when approaching and entering ports.

A.its flashing light
B.the ship's name
C.its identification
D.its signal letters

單項選擇題

Except in rare cases,it is impossible to extinguish a shipboard fire by（）.

A.removing the heal
B.removing the oxygen
C.removing the fuel
D.interrupting the chain reaction