A.catch plates
B.dampers
C.regulating valves
D.fans
您可能感興趣的試卷
你可能感興趣的試題
A.few
B.little
C.a little
D.less
A.pressure
B.temperature
C.density
D.volume
A.pressure
B.temperature
C.density
D.volume
A.the saturation temperature is higher
B.the higher the saturation temperature
C.the higher is the saturation temperature
D.the saturation temperature is more high
A.liquid
B.steam
C.gas
D.electricity
最新試題
If the suction pressure at the refrigeration compressor is below normal, the cause can be（）.
The rate of heat transfer from a hot region to a cold region is affected most by the （）.
If the head pressure of a reciprocating refrigeration compressor is excessive, （）.
On tank vessels equipped with power operated cargo tank valves, the type of power operator most commonly used is （）.
Which of the problems listed would came the discharge temperature of an R-12 refrigeration compressor to increase?（）
Pitting in the suction areas of a centrifugal pump bronze impeller is usually caused by （）.
Which of the following problems could cause the high pressure cutout switch to shut down the compressor in a refrigeration system?（）
The temperature differential occurring between the inlet temperature of the fluid to be cooled and the outlet temperature of the cooling medium in a shell-and-tube heat exchanger is greatest in which of the flow designs listed?（）
When the steering gear is in operation, you should （）.
Thermostatic expansion valves can be adjusted for （）.