422.增压系统通过控制座舱( )控制座舱压力Pressurization is performed by controlling( )

280.APU的主要功能是( ) What is the main function of the APU?

279.APU正常工作时,将APU主电门置于OFF位置时,APU会发生( )When APU running normally,if set the master switch OFF,what will happen?

278.当在空中APU工作时,探测到低滑油压力,会发生( )When APU running in flight,if LOP is detected,what will happen?

277.当APU转速大于95%,飞行高度大于23000英尺,无引气渗漏,APU:( ) When APU running above 95% and flight up to 23000 ft and no bleed leak.then APU:

276.APU滑油系统哪个部件是由ECB控制的?( ) Which component from the oil system is controlled by the ECB ?

275.APU主要包括哪几个主单元体?( ) What are the main APU modules ?

274.从哪里可触发APU紧急停车?( )Where can shutdown the APU emergency?

273.APU引气流量调节是靠什么完成的?( ) The APU bleed airflow regulation by?

272.APU燃油流量信号作用是( )What is the Fuel Flow signal used for ?

271.空地交换的数据由( )管理 which one manages the data for air-ground exchange