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單項(xiàng)選擇題

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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單項(xiàng)選擇題

The sprocket teeth on a wildcat are known as the（）.

A.pawls
B.devil's claws
C.whelps
D.pockets

單項(xiàng)選擇題

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

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