The common method of applying oil to the
2024-03-11 128次 海船船员 反馈错误 加入收藏 正确率 : 100%
题目内容:
[单选题]The common method of applying oil to the cylinder walls is by means of small pump assembled in units, known as
A.mechanical lubricator
B.lubrication function
C.forced feed system
D.bearing lubrication
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