A.60~70 B.30~40 C.25~35 D.160~171
A.4:6 B.6:4 C.5:6 D.6:5
A.空氣過(guò)濾器臟堵 B.風(fēng)機(jī)反轉(zhuǎn) C.溫控器溫包泄漏 D.制冷劑不足