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單項選擇題

（）contains the wheelhouse with the control station,the chartroom where charts,pilot books and publications are kept,and the radio room.

A.The doube bottom
B.The cofferdam
C.The navigating bridge
D.The superstucture

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單項選擇題

Longitudinal and transverse separtions between the tanks,which are used to prevent liquids from leaking from one double bottom tank into the other ,are called（）.

A.double bottoms
B.cofferdam
C.navigating bridge
D.superstructure

單項選擇題

（）provides strength and strong space for fule,lubricating oil,fresh water,salt(ballast)water and potable water.

A.The double bottom
B.The cofferdam
C.The navigating bridge
D.The superstructure