C. 燃油关断活门 Fuel shutoff valve D. 液压关断活门 Hydraulic shutoff valve 查看完整题目与答案 飞行中,如果所有的发电机失效且ADG不工作,仅有电瓶电源,飞机将在大约( )分钟后断电。In flight, if all generators fail and the ADG is inoperative, only battery power available, aircraft will lose ...