对活塞环应定期进行______检查 以判断其工作状态。A.外观B.吊缸C.停机D.扫气口请帮忙给出正
对活塞环应定期进行______检查,以判断其工作状态。
A.外观
B.吊缸
C.停机
D.扫气口
请帮忙给出正确答案和分析,谢谢!
参考解答
正确答案:D
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