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
One cause of high head pressure occurring in a refrigeration system can be （）.
If the suction pressure at the refrigeration compressor is below normal, the cause can be（）.
Who is responsible for ensuring that someone is assigned to close the watertight doors in an emergency?（）
If you are given the job of adding hydraulic fluid to a mooring winch, and are not certain as to the type of fluid to use, you should （）.
The major source of chemical contaminants in hydraulic fluid is （）.
The output volume of a positive fixed displacement pump can be changed only by （）.
A gradual decrease in the discharge pressure of an operating hydraulic pump can be caused by （）.
An internal bypass is provided on some hydraulic system suction strainers to help reduce the possibility of （）.
The control mode in which the final control element is moved from one of two flexed positions to the other is known as （）.
Thermostatic expansion valves can be adjusted for （）.