Fuels of high quality with their earlier ignitions will caus

【名词&注释】

不合格(unqualified)、动平衡试验(dynamic balance test)、增压器转子(blower rotor)

[单选题]Fuels of high quality with their earlier ignitions will cause higher （）pressure in cylinders of a diesel engine.

A. compression
B. maximum
C. rated
D. oil

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学习资料：

[单选题]常见气阀的损伤有（）等。Ⅰ.气阀阀盘锥面；Ⅱ.阀面的烧伤与高温腐蚀；Ⅲ.阀盘与阀杆的裂纹；Ⅳ.阀杆的弯曲变形；Ⅴ.阀杆的磨损。

A. Ⅰ+Ⅱ+Ⅲ
B. Ⅰ+Ⅲ+Ⅳ+Ⅴ
C. Ⅰ+Ⅱ+Ⅲ+Ⅴ
D. Ⅰ+Ⅱ+Ⅲ+Ⅳ+Ⅴ

[单选题]下列（）的情况下增压器转子应进行动平衡试验。Ⅰ.转子变形；Ⅱ.L、M间隙不合格；Ⅲ.更换涡轮叶片；Ⅳ.轴承损坏；Ⅴ.压气机导风轮移位。

A. A．Ⅱ＋Ⅳ＋Ⅴ
B. B．Ⅰ＋Ⅱ
C. C．Ⅰ＋Ⅲ＋Ⅳ＋Ⅴ
D. D．Ⅰ＋Ⅱ＋Ⅳ

[单选题]To avoid scavenge fires occurring the engine timing and equipment maintenance （）.

A. should be correctly carried out
B. should correctly be taken place
C. should carded with care
D. must to carry out with great care

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