Bedplates are the _____ of the engine without the support of which the shaft alignment in

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Bedplates are the _____ of the engine, without the support of which the shaft alignment in particular, and engine structure as a whole, would inevitably be lost.

A.hull

B.projection

C.graphitization

D.foundation

请帮忙给出正确答案和分析,谢谢!

热搜:关于氨基酸代谢错误的论述是_________。