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铸铁试件受扭破坏,裂纹为45度螺旋线破坏,则该破坏是由于( )。

单选题
2021-09-01 23:49
A、最大切应力引起的破坏;
B、最大拉应力引起的破坏;
C、最大拉应力和最大切应力一起产生的破坏;
D、无法判断。
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正确答案
B

试题解析

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