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排气阀阀面磨损严重时,采用()修复。

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  • 【名词&注释】

    增压器(turbocharger)、动力装置(power plant)、排气阀(exhaust valve)、排水量(displacement)、安全操作规程、不符合(inconformity)、可靠性。、固定物(fixture)、总重量(total weight)

  • [单选题]排气阀阀面磨损严重时,采用()修复。

  • A. 研阀
    B. 更换气阀
    C. 堆焊
    D. 堆焊阀座

  • 查看答案&解析 查看所有试题
  • 学习资料:
  • [单选题]已知某船排水量为2OOO0t,主机有效功率为10O00kW,主机重量为350t,动力装置总重量(total weight)为8O0t,则该船动力装置的单位重量为()kg/kW。
  • A. 35
    B. 80
    C. 40
    D. 17.5

  • [单选题]贮备可以提高可靠性,它和其他提高可靠性方法的原则区别,在于可使系统的可靠性()部件本身的可靠性。
  • A. 高于
    B. 低于
    C. 相当于
    D. 等于

  • [单选题]拆装螺母时,不符合安全操作规程的是()。
  • A. 一手抓住固定物(fixture)
    B. 另一手力用推
    C. 少用套筒或梅花扳手
    D. 根据需要增加扳手延长套管的长度

  • [单选题]引起增压器振动的原因有()。Ⅰ.轴承损坏;Ⅱ.转子弯曲变形;Ⅲ.转子冷却不良;Ⅳ.转子不平衡;Ⅴ.油泵安装不良。
  • A. Ⅱ+Ⅳ+Ⅴ
    B. Ⅰ+Ⅱ
    C. Ⅰ+Ⅱ+Ⅴ
    D. Ⅰ+Ⅱ+Ⅳ

  • [单选题]A common trouble with the fuel pump plunger or fuel valve spindle is ().
  • A. water leakage
    B. steam leakage
    C. oil leakage
    D. air leakage

  • [单选题]It is very important that each cylinder should be () scavenged before the charged air is compressed.
  • A. well
    B. good
    C. excellent
    D. respectively

  • [单选题]() the cylinder walls, the heat passes through them by conduction.
  • A. When receiving by
    B. When received by
    C. In order to receiving
    D. In order to receive

  • [单选题]Cylinder lubrication oil for low speed main propulsion diesel engines is admitted to each cylinder during ().
  • A. the power stroke
    B. the compression stroke
    C. low load operation only
    D. periods of standby

  • [单选题]A magnetic strainer is used in the diesel engine reduction gear oil system to remove small particles of().
  • A. water
    B. babbitt
    C. iron or steel
    D. acid

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