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Expansion tank should be used to remove () from cooling wa

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  • 【名词&注释】

    柴油机(diesel engine)

  • [单选题]Expansion tank should be used to remove () from cooling water.

  • A. scale
    B. sludge
    C. chemicals
    D. air

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  • 学习资料:
  • [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]活塞运动部件在船上安装前,应在车间平台对其位置精度进行复验,以保证()。
  • A. 顺利安装
    B. 其与固定件的对中性
    C. 其与曲轴的正确安装
    D. 柴油机可靠运转

  • [单选题]艉轴管本件在船上安装后应进行()水密试验。
  • A. 艉轴管
    B. 尾尖舱
    C. 艉轴承
    D. 货舱

  • [单选题]油润滑艉轴承Simplex密封装置的损坏主要发生在()上。
  • A. 中间环
    B. 橡胶环
    C. 防蚀衬套
    D. 橡胶环和防蚀衬套

  • [单选题]Oil pressure in the lubrication system is () the static sea water head to ensure that sea water () the stem-tube.
  • A. lower than;can lubricate
    B. lower than;can cool
    C. higher than;can enter
    D. higher than ;cannot enter

  • [单选题]The selection of an oil depends () on the operating conditions, the design of the engine and the type of fuel to be burned.
  • A. to a great extent
    B. on a great extent
    C. on mainly
    D. on only

  • [单选题]The pH value of water in a diesel engine closed cooling water system should be maintained between ().
  • A. 60 to75
    B. 80 to 95
    C. 100 to 115
    D. 120 to 135

  • [单选题]How would the exhaust of a properly operating diesel engine appear?().
  • A. Light blue haze
    B. Light brown haze
    C. Light gray haze
    D. Perfectly clear

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