正确答案: A
Dmax-D
题目:气缸套的内径增量ΔD=()(D为名义直径)。
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学习资料的答案和解析:
[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。
Ⅰ+Ⅱ+Ⅲ+Ⅳ+Ⅴ
[单选题]当气阀阀面出现麻点、腐蚀时可采用()工艺修复。
以上均可
[单选题]在柴油机投入使用一年或大修后,一般均要进行一次贯穿螺栓预紧力检查,检查时()。
A.应当松开全部的主轴承螺栓
[单选题]水润滑艉轴承首端设置填料函式密封装置是为了()。
防止海水流入机舱
[单选题]The cylinder and piston must be warmed up () to a temperature of about 140 degF in standing by engine.
gradually
[单选题]With four-stroke engines, it takes four revolutions of the crank shaft to make () power stroke(s).
2
[单选题]() into the cylinder because no fuel can burn () it.
Air must be admitted;without
[单选题]The jacket water temperature in a diesel engine closed freshwater cooling system is normally controlled by ()
the operation of the thermostatic valve