单项选择题
A.re-evaporator B.receiver C.dehydrator D.solenoid
The humidity of the atmosphere can be determined by the...
单项选择题The humidity of the atmosphere can be determined by the use of the（）
A.anemometer B.potentiometer C.manometer D.psychrometer
In a centrifugal Freon refrigeration system, the overal...
单项选择题In a centrifugal Freon refrigeration system, the overall capacity of the system is increased by（）
A.opening more bypass lines B.opening additional expansion valves C.adding refrigerant D.speeding up the machine
The main distribution duct in an air conditioning syste...
单项选择题The main distribution duct in an air conditioning system which contains the cooling coils and filters is called the（）
A.manifold B.condenser C.chamber D.plenum
