49.用何种方式可以进入电子舱( ) what way can use to enter the electronic cabin?()。

653.当使用地面气源时,交输活门必须( )When using a ground cart, crossfeed valve must be( )

652.控制预冷器冷空气的活门是( ) The Valve controls the engine fan air flow rate through the precooler is ( )

651.交输活门的双马达分别是( )Two electrical motors of the Crossbleed Valve are ( )

650.THS有几种工作方式?( )The Thermostat Solenoid ( ) operates in ( ) modes

649.FAV活门类型是( )What type is the FAV

648.控制APU引气的部件是( )APU bleed air is contorled by ( )

647.控制高压级引气的是( )The HP stage bleed air is contorled by( )

646.发动机高转速时从( )引气Where is Bleed air from at high engine speed

645.在哪里给旅客氧气瓶充氧( ) Where is the passenger oxygen filling?

644.旅客氧气瓶安装在哪里? What the location of passenger oxygen cylinder installation?