问题描述：
[单选]
The main purpose of the piston oil scraper rings is to（）．
A．seal the space between the piston and the liner
B．reduce the amount of lube oil burned in the combustion chamber
C．transmit heat from the piston to the cylinder liner
D．damp out fluctuations of the piston side thrust
参考答案：查看无
答案解析：无
☆收藏
答案解析：无
☆收藏
上一篇：What causes diesel fuel to be ignited in the cylinder of an operating diesel engine？
下一篇：Maximum horsepower of a diesel engine is attained（）．
- 我要回答: 网友(216.73.216.96)
- 热门题目: 1.吊缸时，最后阶段的工作是（） 2.怎样防止曲柄箱爆炸？ 3.扫气箱着火时应采取怎样措施？