单项选择题
（）is used in bilges and peak tanks.
A.Bitumen
B.Paint
C.Cement wash
D.Varnish
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单项选择题
（）is the eye of the ship.
A.Engine room
B.Bridge
C.Deck
D.Compass -
单项选择题
Cement wash is a mixture of cement powder and （）.
A.fresh water
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单项选择题
The principle protective coating is （）.
A. cement wash
B. paint
C. bitumen
D. undercoat
