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关于引起传动轴动不平衡的原因,以下说法错误的是()。

单选题
2021-09-02 16:42
A、传动轴上的平衡块脱落
B、传动轴弯曲或传动轴管凹陷
C、伸缩叉安装错位
D、中间支承安装方法不当
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正确答案
D

试题解析

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