单项选择题
The sprocket wheel in a windlass，used for heaving in the anchor，is called a（）.
A.capstan
B.dog wheel
C.fairlead
D.wildcat
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相关考题
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单项选择题
The sprocket teeth on a wildcat are known as the（）.
A.pawls
B.devil's claws
C.whelps
D.pockets -
单项选择题
The ratio of the height of a vessel’s rudder to its width is referred to as the（）.
A.aspect ratio
B.constriction ratio
C.rudder ratio
D.steering ratio -
单项选择题
The projecting lugs of the rudderpost which furnish support to the rudder are called（）.
A.bases
B.gudgeons
C.pintles
D.rudder lugs
