單項(xiàng)選擇題If an emergency pump control is used as the emergency shutdown on a tanker，it must（）.

A.stop the flow of oil at the main deck manifold
B.prevent the oil from leaving the shore facility
C.prevent the oil from siphoning through the pump
D.None of the above


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1.單項(xiàng)選擇題If a davit-launched life raft aboard a vessel cannot be launched because of damage to the davit，you should（）.

A.inflate the life raft on deck
B.roll the life raft over the side
C.go to another life raft station
D.get a saw and cut the life raft free

2.單項(xiàng)選擇題Hand holds or straps on the underside of an inflatable liferaft are provided（）.

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

3.單項(xiàng)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

4.單項(xiàng)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

5.單項(xiàng)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