552.不间断电源( )主要功用是什么( )The function of No Break Power Transfer( ) is()

150.位于绿兰黄勤务面板的人工释压活门的功用 the function of manual relief valve which Located in ground service panel of green 、blue、 yellow system is:)

149.液压系统电动泵 Electric pump of the hydraulic system can:( )

148.哪个液压系统给恒速马达/发电机供压 Which hydraulic system supplies prussure to the constant speed motor / generator ?( )

147.液压管的系统识别是通过管路标签上的 hydraulic System pipeline identification by:( )

146.从何处取液压油样 where can extracted Hydraulic samples ?( )

145.液压油箱增压目的是 the hydraulic reservoir pressurization purposes is?( )

144.FCMC1和FCMC2是怎样工作的( ) How dose the FCMC1 and FCMC2 works().

143.FCMC控制所有配平传输液活门,当FCMC失效时,这些活门处于( ) FCMC control all trim transfer valve, when the FCMC fails, the valve at().

142.地面维护时,人工中央油箱主传输的操作和注意事项( )on ground maintenance, manual operation central tank transfer to inner tank must be attention:

141.如果APU页面上出现A FUEL LO PR信息,则表明( ) If A FUEL LO PR information apper on APU page, show:()