如图所示零件是()

<img src='https://img2.soutiyun.com/shangxueba/ask/17805001-17808000/17806010/2017060109402480988.jpg' /> A.直轴 B. 阶梯轴 C. 曲轴 D. 挠性轴

时间:2023-07-01 09:22:56

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