用从扫气口用硬棒触动观察的方法检查和判断活塞环的状态 如发现所触动的环在环槽中不需用力就能活动自如
用从扫气口用硬棒触动观察的方法检查和判断活塞环的状态,如发现所触动的环在环槽中不需用力就能活动自如,则说明该活塞环______。
A.正常
B.断裂
C.弹力不足
D.过度磨损
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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