单项选择题
A.Bitumen B.Paint C.Cement wash D.Varnish
（）is the eye of the ship.A.Engine roomB.BridgeC.DeckD.C...
单项选择题（）is the eye of the ship.
A.Engine room B.Bridge C.Deck D.Compass
Cement wash is a mixture of cement powder and （）.A.fres...
单项选择题Cement wash is a mixture of cement powder and （）.
A.fresh water B.steel C.paint D.wood
The principle protective coating is （）.A. cement washB....
单项选择题The principle protective coating is （）.
A. cement wash B. paint C. bitumen D. undercoat
