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(216.73.216.168)
- 热门题目: 1.发动机连续起动次数取决于（） 2.发动机连续起动次数越多其机动 3.发动机换向时间越短其机动性越