447.防冰活门的作用是( )What is the purpose of the anti-ice valve

255.前轮转弯系统中旁通活门的作用?( ) Nose wheel steering system bypass valve function:

254.在拖飞机时通常使用哪个系统的液压控制刹车( )In aircraft towing, which hydraulic system usually use to control brake?

253.三表盘指示的是?( )TRIPLE INDICATOR indicate:

252.哪个部件给ECAM提供起落架位置( ) Which part is provided to ECAM gear position

251.更换主LG的PITCH TRIMER后哪些测试是不需要的?( ) The replacement of the main LG PITCH TRIMER which test is not required?

250.在自由放出起落架时哪些起落架会放出( ) In the free release gear which gear will release

249.LG的临近电门由PSCU监控吗?( ) LG approaching switch is monitored by PSCU?

248.下面哪个值最接近主轮冲气压力( )( ) Which of the following values closest to the main wheel flushing air pressure

247.当机轮温度过高时有什么警告?( ) When the wheel when the temperature is too high to have what warning?

246.机轮风扇如何工作?( ) How to machine wheel fan?