544.主交流汇流条( )正常情况下由哪个交流汇流条向它供电( )which AC BUS power to AC ESS in the normal circumstances.

158.地面勤务总管上的人工选择活门的功用 What is manual selection valve on ground service manifold function?( )

157.渗漏测量活门的功用是 What function of measuring leakage valve is?( )

156.哪个系统有手摇泵? Which system has a hand pump?

155.绿系统有几个发动机泵 how many engine pump dose Green system has ?( )

154.兰系统电动泵的工作方式 How dose the blue system electric pump works?( )

153.加油油滤堵塞时,会发生什么 what will happen when the filling filter blockage? ( )

152.在地面黄系统电动泵何时自动运转 when dose the yellow system electric pump automatic operation on ground?( )

151.兰系统正常由谁增压 which pump supplies pressure to blue system in normal condition?( )

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:( )