A.總結B.監(jiān)督C.指導D.檢查
A.集中潤滑 B.連續(xù)壓力循環(huán)潤滑 C.間歇無壓潤滑 D.分散潤滑
A.0.5~0.7 B.0.6~0.8 C.0.7~0.9 D.0.8~0.9