活塞环槽端面磨损是由于______等原因造成。Ⅰ.高温 Ⅱ.材质不佳 Ⅲ.润滑不良 Ⅳ.相对运动 Ⅴ
活塞环槽端面磨损是由于______等原因造成。Ⅰ.高温,Ⅱ.材质不佳,Ⅲ.润滑不良,Ⅳ.相对运动,Ⅴ.磨粒。
A.Ⅰ+Ⅱ+Ⅲ+Ⅳ
B.Ⅰ+Ⅳ+Ⅴ
C.Ⅲ+Ⅴ
D.Ⅰ+Ⅱ+Ⅲ
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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