一起答
单选

The shutter of the evaporator was blocked with _____, it means there was too much evaporation.

  • A.ice
  • B.wooden board
  • C.iron plate
  • D.cotton waste
试题出自试卷《海船船员考试轮机部三管轮模拟题2(轮机英语)》
参考答案
查看试卷详情
相关试题
  1. The shutter of the evaporator was blocked with _____, it means there was too much evaporation.

    • A.ice
    • B.wooden board
    • C.iron plate
    • D.cotton waste
  2. The refrigerating agent can _____ at low temperature in the evaporator.

    • A.expand
    • B.evaporate
    • C.condense
    • D.distil
  3. Which of the following pumps belongs to centrifugal pump?

    • A.Piston pump
    • B.Screw pump
    • C.Diffuser pump
    • D.Water-ring pump
  4. If the cooling water temperature and the lube oil temperature in a diesel engine are too high, the cause can be ________.

    • A.a dirty lube oil strainer
    • B.internal water leaks
    • C.an oil suction line restriction
    • D.excessive wears of the cooling water pump
  5. A substantial increase in crankcase pressure could be an indication of ______.

    • A.excessive lube oil pressure
    • B.the proper seating of new rings
    • C.a worn cylinder liner
    • D.a malfunctioning cylinder relief valve
  6. The output voltage of a three-phase alternator is regulated by the _____.

    • A.AC voltage to the armature
    • B.AC voltage to the field
    • C.DC voltage to the armature
    • D.DC voltage to the field
  7. What is the result of converting 10℃ into degree of Fahrenheit?

    • A.0°F
    • B.18 °F
    • C.32 °F
    • D.50 °F
  8. Which of the following descriptions best identifies the operating principal of a flash-type evaporator?

    • A.Sea water is heated to boiling temperature while under a vacuum
    • B.Sea water is passed over heated plates in a thin film
    • C.Heated sea water is injected into a vacuum chamber
    • D.Sea water is forced through a heated eductor
  9. _____ connected to the moving tiller will bring the floating lever pivot and the lever into line at right angles to the screw shaft axis.

    • A.A cut-off lever
    • B.A swivel block
    • C.A cross-head
    • D.A driving gear
  10. Water evaporates or steam condenses at the saturation temperature, which depends upon the pressure, the higher the pressure _____ the saturation temperature.

    • A.the more
    • B.the higher
    • C.the lower
    • D.the highest