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單項選擇題

Each commercial fishing vessel must have at least one immersion suit，exposure suit，or life preserver for each（）.

A.person aboard
B.person working on deck
C.crew member
D.None of the above are correct

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單項選擇題

Deck foam systems，designed to protect cargo areas on tankers built after January 1，1975，must have a supply of foam-producing material to operate the system at its designed rate of foam production for（）.

A.15 minutes without recharging
B.20 minutes without recharging
C.25 minutes without recharging
D.30 minutes without recharging

單項選擇題

Cable tension for catenary calculations is taken at the（）.

A.chain locker
B.fairlead
C.anchor
D.contact point of chain with seabed