When started, a complete oily water separating unit is first filled______. The oily water mixture is then pumped through the inlet pipe into the coarse separating compartment.

试卷相关题目

• 1Oily water separators are used to ensure that ships don't discharge oil when pumping out ______.

  A.ballast water

  B.boiler water

  C.bilge water

  D.sewage water

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• 2In order to achieve greater dehumidification(除湿) with an air conditioning system, you should ______. I. reduce the cooling coil temperature  II. increase the re-heater temperature

  A.I only

  B.II only

  C.Both I and II

  D.Neither I nor II

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• 3If air at 95 ℃ dry bulb temperature and 50% relative humidity is conditioned to 75 ℃ dry bulb temperature and 50% relative humidity, it is an example of ______.

  A.cooling only

  B.cooling and humidifying

  C.cooling and dehumidifying

  D.adiabatic(绝热的) cooling

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• 4The dew point of air is reached when the wet bulb temperature is ______.

  A.twice the dry bulb temperature

  B.10℃ above the dry bulb temperature

  C.5℃ above the dry bulb temperature

  D.equal to the dry bulb temperature

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• 5Which of the following conditions must exist for heat to flow from one object to another、

  A.The two objects must be in physical contact.

  B.The two objects must be the same size.

  C.There must be an existing temperature differential.

  D.There must be an existing weight differential.

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• 6Which is the pollution prevention equipment、

  A.booster pump

  B.evaporator

  C.incinerator

  D.cooler

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• 7The oil sludge is burnt in the ______onboard. I’ll show you the ashes.

  A.boiler

  B.main engine

  C.auxiliary engine

  D.incinerator

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• 8Most marine biological sewage treatment plants consist of all the following statements except ______.

  A.aeration tanks

  B.settling tanks

  C.disinfection agent

  D.anaerobic bacteria (厌氧菌)

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• 9Great care is dedicated to the removal of _____ from the scavenge air.

  A.gravity

  B.viscosity

  C.density

  D.humidity

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• 10Dirty oil must be _____ before being used again.

  A.mixed with clean oil

  B.purified

  C.heated

  D.strained

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