问题描述：
[单选]
The diesel engine must be started before it can run by it self For this purpose（）has to be used．
A．a starting system
B．the starting air
C．a starting operation
D．A, B and C
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 diffuser prevents pressure pulses from one cylinder（）another during operation．
下一篇：The diesel engine is a type of internal combustion engine which ignites the fuel by injecting it into hot， high pressure air in a（）．
- 我要回答: 网友(216.73.216.49)
- 热门题目: 1.烟灰具有粘性，这是烟灰发生沉 2.废气流速低是废气锅炉烟灰沉积 3.在约定MCR工况下，废气锅炉