A.compressor
B.condenser
C.throttle valve
D.evaporator
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A.open-type
B.hermetic
C.semi-hermetic
D.all the above
Which of the following will be desirable properties of refrigerant?()
(1) non-explosive
(2) non-corrosive
(3) that it doesn’t react with lubricants
A.(1), (2) and (3)
B.(1) and (2)
C.(1) and (3)
D.(2) and (3)
A.saturated
B.super-cooled
C.wet
D.superheated
A.extracts
B.releases
C.gives no
D.absorbs no
A.vapor
B.liquid
C.solid
D.None of the above is tree
A.above
B.below
C.equal to
D.None of the above
A.filter
B.filter drier
C.heat exchanger
D.air cooler
A.temperature
B.density
C.volume
D.pressure
A.compressor;condenser
B.condenser;evaporator
C.throttle valve;evaporator
D.evaporator;condenser
A.detect the temperature
B.detect the pressure
C.heat the refrigerant
D.accelerate the refrigerant
最新试题
The usual symptoms of cavitation in a centrifugal pump is ().
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The amount of fluid friction or internal friction inherent in a mineral lubricating oil is reflected as a measure of its ().
An internal bypass is provided on some hydraulic system suction strainers to help reduce the possibility of ().
A salinity indicator is used to determine the ().
A salinity indicator is used to determine the ().
On tank vessels equipped with power operated cargo tank valves, the type of power operator most commonly used is ().
The control mode in which the final control element is moved from one of two flexed positions to the other is known as ().
An excessive charge of refrigerant in an air-cooled refrigeration system can cause ().
Who is responsible for ensuring that someone is assigned to close the watertight doors in an emergency?()