问题描述：
[单选]
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 lubricatio
参考答案：查看无
答案解析：无
☆收藏
答案解析：无
☆收藏
上一篇：The cast iron guide-ways for（）are attached to the top section and seal off the crankcase．
下一篇：The cast iron（）for the cross-head are attached to the top section and seal off the crankcase．
- 我要回答: 网友(216.73.216.223)
- 热门题目: 1.十字头销一般选用（）锻造而成 2.活塞销的主要损坏形式是（）。 3.测量发现，活塞在气缸中发生倾