二冲程直流扫气十字头式柴油机吊缸时，不必检查（）。

【名词&注释】

柴油机(diesel engine)、性能参数(performance parameter)、活塞环(piston ring)、气缸套(cylinder liner)、二冲程(two-stroke)、发生变化

[单选题]二冲程^(two-stroke)直流扫气十字头式柴油机吊缸时，不必检查（）。

A. 活塞销
B. 活塞
C. 活塞环
D. 气缸套

查看答案&解析 查看所有试题

学习资料：

[单选题]测量曲轴臂距差时，曲轴旋转一周，可依次测得臂距值为（）。

A. L右、L上、L下、L左
B. L上、L下、L左、L右
C. L左、L右、L上、L下
D. L上、L右、L下、L左

[单选题]主机主轴承磨损后，（）性能参数发生变化。Ⅰ.臂距差；Ⅱ.桥规值；Ⅲ.轴承间隙；Ⅳ.曲轴轴线状态；Ⅴ.主轴颈下沉量。

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

[单选题]短轴系是指具有（）或（）中间轴的轴系。

A. 一节/两节
B. 一节/无
C. 两节/三节
D. 10m/小于10m

[单选题]中间轴常见的失效形式有（）。

A. A．磨损
B. B．腐蚀
C. C．裂纹
D. D．断裂

[单选题]船轴磨损后应检测其（）。

A. 圆度误差
B. 圆柱度误差
C. 工作轴颈
D. 轴颈

[单选题]After the order “（）” is given, the air system is shut down, the turning gear put in.

A. Finished with Engine
B. Stop the Engine
C. Stand-by Engine
D. Slow-down Engine

[单选题]Diesel engine main and connecting rod precision bearings are made in halvesEach half exceeds one-half the bearing circumference by a small amountThe small amount is termed （）.

A. clearance
B. crush
C. pitch
D. thrust

[单选题]If fuel injection to a four-stroke/cycle diesel engine begins earlier than designed, ignition may be delayed because the （）.

A. cylinder compression pressure may not be high enough
B. cylinder compression temperature may be too high
C. fuel oil injection pressure may not be high enough
D. scavenge and purge process is incomplete

[单选题]Generally speaking，the fuel injected into a marine diesel engine combustion chamber is ignited by（）.

A. spark plugs
B. glow plugs
C. heat of compression
D. a magneto

本文链接：https://www.51bdks.net/show/44gpkj.html