问题描述：
[单选]
In a normally operating diesel engine， the main cause of lubricating oil contamination in the crankcase is a result of the（）．
A．metal particles loosened by wear
B．air when no air cleaners are used
C．condensation of water vapors
D．breakdown of the lubricating oil by dilutio
参考答案：查看无
答案解析：无
☆收藏
答案解析：无
☆收藏
上一篇：Loss of lubricating oil pressure to the main propulsion diesel engine will actuate a/an（）．
下一篇：A viscous damper， as used on a marine diesel， is a sealed precision built device which dampens the torsional vibrations in the（）．
- 我要回答: 网友(216.73.216.96)
- 热门题目: 1.换新薄壁轴瓦时，（）的操作是 2.欲将薄壁瓦自轴承座内盘出时， 3.厚壁瓦欲自轴承座内盘出时，应