299.铝合金的牌号4XXX表示什么合金? What meaning of aluminium alloy 4XXX is ?

403.驾驶舱头顶板系统按钮按进且”FAULT”灯亮表示( ) system button on overhead panel in cockpit ,pressed in and the “FAULT” light is on ,it present:( )

402.门区域部件其区域号为( ) How many major zones is the aircraft divided into 8 :( )

401.飞机共分为几个主区域( ) How many main areas is the plane divided into( )

400.飞机上有几个主顶升点( ) How many main jack points are there on A330 aircraft( )

399.飞机上绝大部分舵面采用( ) Most of the flight control surface using on the plane( )

398.发动机气源引气来自( ) the engine air source is from:

397.关于滑油泵组件( )About the oil pump components

396.常装磁堵为( )Often with magnetic wall for:

395.启动成功后,启动活门( ) after start succeed,the starting valve will:

394.启动活门不能关闭时( )when the start valve can not close,what happen?