单项选择题

The sailors are （）the leakage in fire-fighting and life-saving operations.

A. blocking up
B. looking up
C. looking out
D. taking up

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单项选择题
The （）from waterline to the bottom of the ship is called draft.

A.breadth
B.depth
C.width
D.height
单项选择题
The （）part of the ship on port is called the port bow.

A.aft
B.forward
C.head
D.bow
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