承磨环磨损后 应_______换新A.立即B.在更换活塞时C.不要D.更换活塞环时请帮忙给出正确答案
承磨环磨损后,应_______换新
A.立即
B.在更换活塞时
C.不要
D.更换活塞环时
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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