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單項(xiàng)選擇題

In an air conditioning system, low head pressure associated with a reciprocating compressor can be the result of （）

A.broken valve springs
B.tight drive belts
C.high line voltage
D.air in the system

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單項(xiàng)選擇題

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

單項(xiàng)選擇題

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

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