单选题（）provides strength and strong space for fule,lubricating oil,fresh water,salt(ballast)water and potable water.AThe double bottomBThe cofferdamCThe navigating bridgeDThe superstructure
单选题
（）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
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