问题描述:
[单选]
Valve gear knocks are more easily located while the engine().
A.is running
B.stops
C.is repaired
D.lacks of oil
参考答案:查看无
答案解析:无
☆收藏
答案解析:无
☆收藏
- 我要回答: 网友(216.73.216.220)
- 热门题目: 1.为什么主机紧急停车之后仍会发 2.为什么柴油机低负荷运转容易产 3.简述废气锅炉蒸汽产生率与蒸汽
