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 ( )

50.在紧急情况下,驾驶舱内的机组人员有几种撤离路径可用In case of emergency, the cockpit crew have several evacuation path available( )

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

48.旅客氧气面罩收藏在哪里( ) where use to store The passenger oxygen masks ?()。

47.货舱侧壁减压板的作用是( ) the depressurization panel of the cargo side wall function is:()。

46.舱勤务梯的开锁手柄位置( ) The unlocking handle of electronic cabin service ladder is located:()。

45.货舱出口处有1个SILL LATCH处于放下状态,则( ) if one Cargo Exit SILL LATCH is down, then()

44.客舱内部哪些装饰板是可以拆卸的( ) which planels are removable?()。

43.当电动操作有故障时,驾驶员能用什么方法操作( ) When the electric operation fails,which method can use to operate the seat?()。

42.驾驶舱那几个座椅是电动操作的( ) which cockpit seat can operate by electricity ?

41.在非正常情况下(即AC BUS1)失效时,主交流汇流条( )可由哪里供电( )When the AC BUS1 was failed,where does the AC ESS powered?