海船船员考试轮机部三管轮模拟题2(轮机英语)
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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
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The refrigerating agent can _____ at low temperature in the evaporator.
- A.expand
- B.evaporate
- C.condense
- D.distil
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Which of the following pumps belongs to centrifugal pump?
- A.Piston pump
- B.Screw pump
- C.Diffuser pump
- D.Water-ring pump
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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
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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
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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
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What is the result of converting 10℃ into degree of Fahrenheit?
- A.0°F
- B.18 °F
- C.32 °F
- D.50 °F
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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
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_____ 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
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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
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