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

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单项选择题You hear the general alarm and ship’s whistle sound for over 10 seconds. Traditionally，this is the signal for（）.

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单项选择题Is extra power available（）emergency while maneuvering?

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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?（）