活塞环槽磨损后 其截面形状变成A.矩形B.梯形C.不规则形状D.菱形请帮忙给出正确答案和分析 谢谢!
活塞环槽磨损后,其截面形状变成
A.矩形
B.梯形
C.不规则形状
D.菱形
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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