单项选择题

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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单项选择题

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

单项选择题

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

单项选择题

A.readily accessible
B.securely stowed
C.stored in sealed containers
D.stowed with the emergency provisions