单项选择题
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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相关考题
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单项选择题
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 -
单项选择题
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 -
单项选择题
A certificated lifeboatman assigned to command the lifeboat should（）.
A.be the first individual to board the craft
B.drain the hydraulic pressure before lowering the craft
C.have a list of the persons assigned to the lifeboat
D.All of the above
