活塞冷却侧的裂纹是_______A.热疲劳裂纹B.机械疲劳裂纹C.接触疲劳裂纹D.蠕变请帮忙给出正确
活塞冷却侧的裂纹是_______
A.热疲劳裂纹
B.机械疲劳裂纹
C.接触疲劳裂纹
D.蠕变
请帮忙给出正确答案和分析,谢谢!
参考解答
正确答案:B
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