活塞顶部烧蚀的形貌是A.麻点或凹坑B.较为粗糙C.分散小孔D.集中的小孔群请帮忙给出正确答案和分析
活塞顶部烧蚀的形貌是
A.麻点或凹坑
B.较为粗糙
C.分散小孔
D.集中的小孔群
请帮忙给出正确答案和分析,谢谢!
参考解答
正确答案:A
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