单项选择题
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
单项选择题 In an air conditioning system, low head pressure associated with a reciprocating compressor can be the result of （）
单项选择题 In order to achieve greater dehumidification with an air conditioning system, you should （） Ⅰ.reduce the cooling coil Ⅱ.temperature increase the re-heater temperature
单项选择题 Which of the following influences the position of the interface between the liquid seal and the oil in a purifier?（）