轮机英语【二三管】题库

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When securing a flash-type evaporator for an extended period of time,you should

  • A.fill the unit with saltwater
  • B.fill the unit with descaling compound
  • C.completely drain the unit
  • D.tightly seal the unit to exclude air
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1 单选题 1分
When bilge water is heated in a holding tank, which one of the following statements is not accurate?
  • A. The high temperature facilitates primary gravity separation
  • B. Most of the oil and organic solvents are raised to the top layer
  • C. The high the temperature is, the more the top oil will be collected
  • D. The high temperature has little use on the separation of emulsified oil
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Electrical circuits are protected against overheating by means of a/an( ).
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When fighting a spreading fire resulting from a broken fuel line, you should FIRST
  • A. look for a CO2 extinguisher
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  • C. shut off the fuel supply
  • D. smother the fire with rags
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