单项选择题

A liferaft which has inflated bottom-up on the water（）.

A.should be righted by standing on the carbon dioxide cylinder，holding the righting straps，and leaning backwards
B.should be righted by standing on the life line，holding the righting straps，and leaning backwards
C.will right itself when the canopy tubes inflate
D.must be cleared of the buoyant equipment before it will right itself

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单项选择题

A life line must be connected to the liferaft（）.

A.at the bow
B.at the stern
C.in the middle
D.all around

单项选择题

A chock（）.

A.is a deck fitting used to shackle gear to the deck
B.permits easy jettisoning of deck cargo in an emergency
C.prevents stress concentration in the bulwark
D.provides openings through the bulwark for mooring lines

单项选择题

A hydrostatic release mechanism for a liferaft（）.

A.must be wet before it will release
B.should be kept in a watertight cover except in an emergency
C.will inflate the raft in its cradle if operated manually
D.must be submerged to a certain depth to release automatically