轮机英语【轮机长】题库

单选题 1分

Which of the equipment listed is most effective in processing bilge slops for overboard discharge?

  • A. A 100PPM oily water separator.
  • B. Assembling the lube oil purifier as a separator and aligning it to the bilge overboard.
  • C. A 15PPM oily water separator
  • D. A magnetic duplex strainer
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1 单选题 1分
Fireside burning of boiler tubes can be a result of _______.
  • A. slag deposit
  • B. improper atomization
  • C. soot accumulations
  • D. waterside deposits
2 单选题 1分
Fireside burning of boiler tubes is usually the direct result of _______.
  • A. high furnace temperatures
  • B. gas laning(收缩,原型lane) in tube banks
  • C. oxygen corrosion of metallic surfaces
  • D. overheating due to poor heat transfer
3 单选题 1分
Waterside scale in a fire-tube boiler may cause______.
  • A. increased heat transfer
  • B. fireside erosion
  • C. high steam demand
  • D. overheated tubes
5 单选题 1分
Which of the following problems can occur when an excessive number of water screen tubes are plugged?
  • A. Superheater outlet pressure will rise.
  • B. Superheater outlet temperature will rise.
  • C. Steam pressure leaving the drum will increase
  • D. Steam temperature in the drum will decrease.
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第一章 船舶主推进装置
第二章 船舶辅助机械
第三章 船舶电气和自动化
第四章 船舶轮机管理业务
第五章 国际公约、规则
专项训练一
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