Charging is the filling of the engine cylinder with a supply

【名词&注释】

气缸套(cylinder liner)、压力表(pressure gauge)、穿透性裂纹、冷却水压力

[单选题]Charging is the filling of the engine cylinder with a supply of （） for compression.

A. water
B. fresh air
C. fuel oil
D. ga

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学习资料：

[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。

A. 气缸盖
B. 活塞
C. 气缸套
D. 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. A．塌腰形
B. B．拱腰形
C. C．左拱形
D. D．右拱形

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

A. clear
B. hazy light brown
C. hazy light blue
D. hazy light grey

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

A. it gets dark in color
B. a sample rubbed between fingers feels thin
C. it has been in use for a specified interval
D. it no longer supports combustio

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