单项选择题

Each lifebuoy shall be marked in block capitals of the Roman alphabet with（）of the ship.

A.the call sign and name
B.the official number and name
C.the port of registry and name
D.the port of registry and official number

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单项选择题

As a vessel sinks to a depth of 15 feet，the hydrostatic trip releases the liferaft container from its cradle by（）.

A.breaking the weak link
B.releasing the tie-down strap
C.pulling the operating cord
D.releasing the CO₂ canister

单项选择题

An inflatable liferaft should be manually released from its cradle by（）.

A.cutting the straps that enclose the container
B.removing the rubber sealing strip from the container
C.loosening the turnbuckle on the securing strap
D.pushing the button on the hydrostatic release

单项选择题

An inflatable liferaft is thrown into the water from a sinking vessel. What occurs automatically after the painter trips the CO₂ bottles to inflate the raft?（）.

A.The sea anchor deploys
B.The floor inflates
C.If upside down，the craft rights itself
D.The painter detaches from the raft