正确答案: B

fresh air

题目：Charging is the filling of the engine cylinder with a supply of （） for compression.

查看原题 查看所有试题

学习资料的答案和解析：

[单选题]十字头式柴油机某缸冷却水压力表指针波动时，表明（）有穿透性裂纹。

气缸盖或气缸套

[单选题]曲轴臂距差对应着曲柄的变形，若臂距差大于零，则在垂直平面内曲柄呈()。

A．塌腰形

[单选题]The color of the exhaust from a diesel engine should be （）

clear

[单选题]Lubricating oil should be changed on a heavy duty diesel engine when（）.

it has been in use for a specified interval