单项选择题
A sea anchor is（）.
A.a heavy anchor with an extra long line used to anchor in deep water
B.a cone shaped bag used to slow down the wind drift effect
C.a padeye to which the sea painter is made fast
D.made of wood if it is an approved type
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相关考题
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单项选择题
A self-contained breathing apparatus is used to（）.
A.make underwater repairs to barges
B.determine if the air in a tank is safe for men
C.enter areas that may contain dangerous fumes or lack oxygen
D.resuacitate an unconscious person -
单项选择题
A set of interior steps on a ship leading up a deck from below is known as（）.
A.a companion way
B.tween-decks
C.stairs
D.Any of the above are acceptable -
单项选择题
A sheave is a（）.
A.grooved wheel in a block
B.line to hold a lifeboat next to the embarkation deck
C.partial load of grain
D.sesman's knife
