单项选择题

When the ship is alongside a wharf, we put the （）on the moorings.

A. rat guards
B. anchor ball
C. deck light
D. bollard

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单项选择题

“Single up forward to headline and spring!” means “ （）”.

A. Unmoor all lines except the headline and forward spring.
B. Moor all lines except the headline and forward spring.
C. Hold on all lines except the headline and forward spring.
D. Let go the headline and forward spring.

单项选择题

A head line leads forward from（）to shore.

A.fore
B.bow
C.forecastle
D.fore end

单项选择题

Turn on the （）at night.

A. anchor shape
B. anchor ball
C. anchorage
D. anchor light