單項(xiàng)選擇題

A self-righting survival craft will return to an upright position provided that all personnel（）.

A.are seated with seat belts on and doors shut
B.are seated with seat belts on and doors open
C.are to shift to one side to right it
D.escape from the craft

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單項(xiàng)選擇題

A lifeboat is weight tested by lowering to near the waterand loading to capacity with weight evenly distributed. Itis then lowered into the water and released. This test mustbe done at least once every（）.

A.6 months
B.12 months
C.18 months
D.24 months

單項(xiàng)選擇題

A fully loaded motor-propelled lifeboat must be capable of attaining a speed of at least（）.

A.3 knots in smooth water
B.6 knots in smooth water
C.3 knots in rough water
D.6 knots in rough water