A.压差≤0.3PSI或≥8.6PSI时B.压差≤-0.2PSI或≥8.85PSI时C.压差≤1PSI或≥8.9PSI时
A.按压水上迫降按钮B.按压冲压空气按钮C.按压排气活门按钮
A.1B.2C.3