509.当主变压整流器( )失效后,由哪个供电给直流主汇流条和直流主卸载汇流条( )When the ESS TR was failed ,The MAIN DC BUS and MAIN DC ESS SHED BUS powerd by( )

193.时钟被安装在( ) Where is the clock installed in( )

192.LA用于测量( ) LA is used to measure( )

191.DFDR被安装在( ) DFDR is located at:( )

190.FDR的记录时间有( ) 小时 There are ( ) hours for FDR's record time

189.音响警告是由( )产生的 aural warning is generated by ( )

188.关于ECAM控制面板上”CLR”键( ) The following description is correct,for the ECAM “CLR” key on the control panel( )

187.ECAM/ND转换电门位于( ) ECAM/ND trasfer switch is located in( )

186.连续重复的谐音警告在以下哪种情况下发生( ) which one of the following circumstances does Continuous repetitive aural warning occur in ( )

185.飞机在地面时,正常情况下,以下哪个系统页面不能显示( ) The aircraft on the ground, under normal condition, the following which system page cannot display( )

184.在EFIS中显示飞机控制所需短期参数的显示组件是( ) Which is the display components Shown in EFIS aircraft control short-term parameter ( )