单项选择题
A.to right the raft if it capsizes B.to carry the raft around on deck C.for crewmen to hang on to D.to hang the raft for drying
Each commercial fishing vessel must have at least one i...
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
Deck foam systems，designed to protect cargo areas on ta...
单项选择题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
Cable tension for catenary calculations is taken at the...
单项选择题Cable tension for catenary calculations is taken at the（）.
A.chain locker B.fairlead C.anchor D.contact point of chain with seabed
