central air conditioning system
high velocity system
low velocity system
single duct system
第1题：
In an air conditioning system, moisture is removed from the air by ______.
A.filters
B.separators
C.ducted traps
D.dehumidifiers
第2题：
第3题：
Which of the processes listed would be the most satisfactory method to use to lower the humidity of the air being circulated by an air conditioning system?
A.Cooling the air to a temperature just above dew point
B.Heating the air to a point at which moisture will boil off ,then re-cooling it
C.Cooling the air to a point below dew point, then reheating it
D.Heating the air and then cooling it to a point below dew point
第4题：
evaporation
condensation
liquefies
vaporization
第5题：
Would you like the air-conditioning on?的意思是：（）？
第6题：
According to this passage, which of the following statements is true?
A.In boiler and machinery spaces, there is the air conditioning.
B.In the boiler rooms the requirement of air volume should meet 25-50% of combustion requirement.
C.To maintain the comfort zone in the separate control room the air conditioning plant should be fitted.
D.The comfort conditions can be maintained in the engine room all the time.
第7题：
第8题：
Ventilation ().
A、is a system for moving fresh air
B、can cut indoor pollution to a safe level
C、can cause some diseases
D、is better done through air-conditioning
第9题：
possible
necessary
practicable
impracticable
第10题：
bubbling refrigerant
overheating and oxidation
lowered operating temperatures
reducing the cloud or flash point