2、2014年8月26日凌晨02:20左右，华夏航空CRJ900 /B-3363号飞机执行G52674重庆至贵阳航班，塔台管制员指挥该航班在重庆江北国际机场已被占用的20R跑道起飞。发现错误后，管制员指挥航班中断起飞，飞机在中断起飞滑跑过程中，与跑道上摆放的一块禁行标牌发生碰撞，飞机受损，人员安全。此次事件构成一起运输航空（ ）征候。

从下列选项中选出不提供交流电的电源。From the list below, select the source that does NOT provide AC power

交流汇流条1出现电路短路，会发生下列哪种情况？AC BUS 1 develops an electrical short, which of the following will occur?

判断正误True or false：显示在EICAS主页的IDG 1警戒信息指示整体驱动发电机1滑油压力低或滑油温度高。The IDG 1 caution message displayed on EICAS primary page indicates IDG 1 low oil pressure or high oil temperature.

判断正误True or false：显示在EICAS上的MAIN BATT CHGR状态信息指示主电瓶过热或不充电。The MAIN BATT CHGR status message displayed on EICAS indicates main battery overheating or not charging.

判断正误True or False: 当失去两个IDG，且失去APU发电机或关闭，ADG自动放出导致仅有应急电源状态。副驾驶一侧PFD和MFD将黑屏。When both IDG＇s are lost, and the APU GEN is lost or off, the ADG is automatically deployed resulting in EMER POWER ONLY situation. The PFD and MFD on the FO side will be blank.

当AC ESS ALTN 信息显示，表明：When the AC ESS ALTN message appears, it indicates:

外接电源插座位于：The external AC power receptacle is located:

ADG放出后将给下列哪个服务组件供电？After deployment, which service component of the following will be supplied power from ADG?

ADG提供AC电源给：The ADG supplies AC power to:

主电瓶输出电压为：The output voltage of main battery is: