A、打開 B、關(guān)閉 C、氣門重疊 D、任意
A、0.30,0.35 B、0.36,0.65 C、0.36,0.69 D、0.40,0.60
A、0.30,0.35 B、0.36,0.69 C、0.40,0.60 D、0.30,0.45