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單項選擇題

0n cargo booms,preventers are（）.

A.auxiliary guys
B.extra fair leads
C.steel bands
D.stops

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單項選擇題

0ne of the limitations of foam as an extinguishing agent is that foam（）.

A.cannot be made with salt water
B.is heavierthan oil and sinks below its surface
C.is corrosive and to fire fighters
D.conducts electricity

單項選擇題

0ne of your crew members falls overboard from the starboard side. You should immediateiy（）.

A.apply left rudder
B.throw the crew a life preserver
C.begin backing your engines
D.position your vessel to windward and begin recovery

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