【名词&注释】
可靠性(reliability)、增压器转子(blower rotor)
[单选题]轴系同轴度误差应()。
A. 小于允许值
B. 大于允许值
C. 交点在δmax-φmax三角形内
D. 交点在δmax-φmax三角形外
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学习资料:
[单选题]在可靠性的定义中所叙述的“规定的时间”,理解错误的是()。
A. 时间的累计
B. 转数的累计
C. 距离的累计
D. 次数的累计
[单选题]防止拉缸的工艺措施主要是()。Ⅰ.保证活塞运动装置的安装精度;Ⅱ.保证活塞运动装置的对中性;Ⅲ.采用波纹加工;Ⅳ.采用精车加工;Ⅴ.采用研磨加工。
A. A.Ⅰ+Ⅱ
B. B.Ⅰ+Ⅳ+Ⅴ
C. C.Ⅱ+Ⅲ
D. D.Ⅰ+Ⅱ+Ⅲ
[单选题]增压器自带油泵工作的可靠性与其安装质量有关,安装时应保证()。
A. A.油泵的位置准确
B. B.油泵轴线与增压器转子轴线垂直
C. C.油泵轴线与转子轴线平行
D. D.油泵轴线与转子轴线同轴
[单选题]() provide the water to the pistons.
A. Pneumatic pipes
B. Hydraulic pipes
C. Telescopic pipes
D. Operating gas pipe
[单选题]At the top of the A-frames there is a strong cast iron frame called ().
A. cylinder liner
B. cylinder cover
C. the gear box
D. the scavenging box
[单选题]Charging-air pressure increases if there is incorrect combustion and drop in the () of the diesel engine.
A. machine efficiency
B. machinery efficiency
C. mechanical efficiency
D. mechanics efficiency
[单选题]The piston moving up and down keeps the crankshaft ().
A. to revolve
B. revolved
C. revolving
D. to be revolved
[单选题]A naturally aspirated diesel engine at full throttle will have an intake manifold pressure ()
A. slightly less than atmospheric pressure
B. approximately equal to exhaust manifold pressure at all times
C. that is widely fluctuating constantly
D. decreasing as engine load increase
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