()provides strength and storage space for fuel lubricating oil fresh water salt(ballast)wa

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

A.The double bottom

B.The cofferdam

C.The navigating bridge

D.The superstructure

请帮忙给出正确答案和分析,谢谢!

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