单选

According to the ship emergency plan, when average accident happened and the captain made the decision to withdraw from the engine room before leaving the engine room, the wrong operation is that ____.

  • A.the chief engineer leaves the engineer room with the engine room log book at first
  • B.releasing compressed air in the air receiver and closing the watertight door
  • C.stopping all the running machineries and electric devices
  • D.closing the quick-closing valves of all the oil tanks, stopping the boiler and releasing gas
参考答案
您可能感兴趣的试题

On small, low pressure, air compressors, the cylinders are usually lubricated by the _____.

  • A.splash method
  • B.mechanical force feed lubricators
  • C.detached sump method
  • D.internal cooling passages in the crankshafts and connecting rods

In a closed cooling water system, which of the problems can cause the water pressure to fluctuate?

  • A.An open vent in the cooling system
  • B.A fouled sea chest
  • C.A restricted water passage in the engine
  • D.Air entrained in the cooling water

The thermal expansion valve responds to the______.

  • A.amount of superheat in the vapor leaving the coil
  • B.amount of superheat in the liquid
  • C.temperature in the evaporator coils
  • D.pressure in the evaporator coils

Which of the following may cause that an engine doesnt run on starting air?

  • A.too low starting air pressure
  • B.main start valve closed
  • C.neither A nor B
  • D.A and B

A fuel leak occurs in the high pressure fuel piping between the injection pump and fuel nozzleThis requires immediate repair because of the _______.

  • A.high cost of fuel
  • B.serious fire hazard
  • C.possibility of pollution
  • D.poor combustion which will occur in that cylinder

Fire detecting systems on merchant vessels may be arranged to sense _____.

  • A.smoke
  • B.rate of temperature rise
  • C.ionized particles
  • D.all of the above

The magnetic field is provided by electromagnets so arranged that adjacent poles have _____.

  • A.opposite polarity
  • B.the same polarity
  • C.negative polarity
  • D.positive polarity
¥

订单号:

遇到问题请联系在线客服

订单号:

遇到问题请联系在线客服