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柱塞套筒进行滑动试验时,一般将柱塞抽出()配合面长度。

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  • [单选题]柱塞套筒进行滑动试验时,一般将柱塞抽出()配合面长度。

  • A. A.1/5
    B. B.1/4
    C. C.1/3
    D. D.1/2

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  • 学习资料:
  • [单选题]大型海船艉轴工作轴颈较长,所包覆的铜套过长,加工和安装均不便,故将铜套分段加工、套合,但必须保证()的水密性。
  • A. 铜套铸件
    B. 安装
    C. 接缝处
    D. 套合

  • [单选题]舵杆工作表面过度磨损可以采用()修复。
  • A. 光车
    B. 堆焊后光车
    C. 喷涂后光车
    D. 镀铬

  • [单选题]In the () pressure charging system the pulse of energy that occur as the exhaust is released from the cylinder to improve the output of the turbocharger.
  • A. constant
    B. pulse
    C. high
    D. none of the above

  • [单选题]The gas loads on the engine structure are constrained by means of hydraulically preloaded () which connect the bed plate, frame sections and cylinder jackets into a single unit.
  • A. connecting rods
    B. main bearing
    C. column
    D. tie rod

  • [单选题]The term () refers to one complete sequence of operations required to produce power in an engine.
  • A. diesel engine
    B. stroke
    C. cycle
    D. compression ratio

  • [单选题]A fuel-air mixture below the lower explosive limit is too().
  • A. rich to burn
    B. lean to burn
    C. cool to burn
    D. dense to bur

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