245.机轮冷却风扇何时可以工作?( ) Wheel cooling fan when can it work?

457.空调系统的空气来自哪里( )Where from the air of the air conditioning system

456.控制座舱温度的计算机是( )Which is the control cabin temperature computer

455.驾驶舱所用的空气由什么提供( )Where come from of the Cockpit air

454.什么时候外排活门打开,地板下活门关闭When does the overboard valve is open,the underfloor valve is closed

453.厕所和厨房抽气风扇什么时候工作When does the lavatory and galley extraction fan operate

452.前货舱的冷空气来自哪里( )Where from the cold air of the forward cargo compartment

451.空调系统的空气来自哪里( )Where from the air of the air conditioning system

450.组件出口温度通过控制( )改变The pack outlet air temperature control is achieved by( )

449.将组件按压电门按下后,满足什么条件时组件流量控制活门打开( )When pack pushbutton is pressed in,What the conditions do the flow control valve opens

448.增压系统的两个控制器在同一时间内的工作状态是( )The two CPC at the same time the working state is