303.A330飞机有几个应急舱门 how many emergency hatch are there in 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?

393.空中再启动,点火的能量方式( )in flight quick relight,the ignition energy is:

392.低压涡轮轴承腔为何有2个滚棒轴承?( ) Why the LP turbine shaft bearing chamber has two roller bearings?

391.为什么发动机前、后吊点要分别传递推理和扭转载荷?( )Why the forward and aft mount can not transmits engine torque loads or thrust together?

390.余油放泄系统放泄的油液没有来自( )的油液 The drain liquids can not from: