A.the bow
B.the stem
C.the port side
D.the starboard side
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A.the distillate produced has greater purity
B.no boiling occurs on heat transfer surfaces
C.evaporation occurs at a higher rate
D.the incoming feed is at a higher temperature
A.the system is fully charged
B.there is air leaking in from the condenser
C.ice crystals are forming in the refrigerant
D.the system contains less than a full charge of refrigerant
A.Simplex
B.Duplex
C.Canister
D.Bypass
A.condition of the expansion valve
B.moisture in the system
C.condition of the compressor suction valves
D.condenser temperature
A.trick wheel
B.accumulator
C.standby pump
D.telemotor
最新試題
Who is responsible for ensuring that someone is assigned to close the watertight doors in an emergency?（）
The rate of heat transfer from a hot region to a cold region is affected most by the （）.
Thermostatic expansion valves can be adjusted for （）.
Which of the listed pumps is NOT a positive displacement pump?（）
If the head pressure of a reciprocating refrigeration compressor is excessive, （）.
The usual symptoms of cavitation in a centrifugal pump is （）.
A gradual decrease in the discharge pressure of an operating hydraulic pump can be caused by （）.
The amount of fluid friction or internal friction inherent in a mineral lubricating oil is reflected as a measure of its （）.
One cause of high head pressure occurring in a refrigeration system can be （）.
Which of the following problems could cause the high pressure cutout switch to shut down the compressor in a refrigeration system?（）