问题描述：
[单选]
Lubricating systems for diesel engines are usually designed to initially provide lube oil to the engine（）
A．camshaft beatings
B．main bearings
C．piston crowns
D．cylinder wall
参考答案：查看无
答案解析：无
☆收藏
答案解析：无
☆收藏
上一篇：Regarding a Diesel engine crankcase， the general arrangement and installation should preclude the possibility of（）
下一篇：On most modern diesel engines， the main and connecting rod bearings receive their lubricating oil by（）．
- 我要回答: 网友(216.73.216.96)
- 热门题目: 1.在四冲程柴油机动力装置中，废 2.使废气锅炉排气进口温度t1（ 3.目前所用燃油的排气露点一般在