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轴系同轴度误差应()。

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  • 【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

  • 查看答案&解析 查看所有试题
  • 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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