单选题In ship construction,keel scantlings should be the greatest().Aat each frameBamidshipsCone-third the distance from the bowDone-third the distance from the stern

单选题
In ship construction,keel scantlings should be the greatest().
A

at each frame

B

amidships

C

one-third the distance from the bow

D

one-third the distance from the stern


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