A. 客舱中部 B. 客舱后部左侧 C. 客舱后部右侧
A. 环境温度 B. 比环境温度高20℉ C. 比环境温度高50℉
A. relieve excessive compressor head pressure B. produce flash gas at the expansion valve C. reduce flooding of the receiver at low load D. defrost the evaporator coil