单项选择题
A.broken valve springs B.tight drive belts C.high line voltage D.air in the system
In order to achieve greater dehumidification with an ai...
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
A.Ⅰonly B.Ⅱ only C.BothⅠandⅡ D.NeitherⅠnorⅡ
Which of the following influences the position of the i...
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?（）
A.Height of the machine B.Temperature of the liquid seal C.Gravity disc D.Bowl diameter
The compressor in an air-cooled condensing refrigeratio...
单项选择题The compressor in an air-cooled condensing refrigeration system is short cycling on the high pressure cutout switch（）
A.system is overcharged with refrigerant B.system is low on refrigerant C.discharge valves are leaking excessively D.discharge valves are leaking slightly
