問題詳情

21. Whatis the foundation of engine and the shaft alignment and engine structure as a whole would inevitably be lost without it?
(A) frame
(B) bedplate
(C) cylinder
(D) liner

參考答案

答案:B
難度:適中0.5
統計:A(0),B(8),C(4),D(1),E(0)

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