單項(xiàng)選擇題

What is NOT a function of the air supply of a covered lifeboat?（）

A.Provides air for engine combustion
B.Pressurizes water spray system
C.Provides air for passenger respiration
D.Prevents smoke and other noxious fumes from entering craft

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單項(xiàng)選擇題

Under normal conditions a liferaft is released from itscradle by（）.

A.cutting the restraining strap
B.unscrewing the turnbuckle on the back of the cradle
C.lifting one end of the raft
D.pushing the plunger on the center of the hydrostatic release

單項(xiàng)選擇題

Two individuals authorized to serve as a lifeboatman must be assigned to any lifeboat that has a capacity of more than（）.

A.10 persons
B.20 persons
C.30 persons
D.40 persons