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4. 一等直拉杆在两端承受拉力作用,若其一半为钢,另一半为铝,则两段的( )

A、应力相同,变形相同

B、应力相同,变形不同

C、应力不同,变形相同

D、应力不同,变形不同

时间：2021-09-01 16:44 关键词：青书学堂平顶山学院机械电子工程机械制造装备设计

答案解析

B

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