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

1、2018年7月4日，华夏航空股份有限公司G52683航班CRJ900型/B-3371号机在通辽机场着陆拉平，距地2英尺时，双发燃油关断锁被误碰解锁，油门杆从慢车位收至关断位，左右发燃油油量为0，双发停车，液压系统失效，防滞刹车不工作，四个主轮轮胎拖胎爆胎，飞机停止在距跑道末端435米处，无人员伤亡。该事件构成（ ）。

A. 运输航空严重征候

B. 运输航空一般征候

C. 通用航空征候

D. 运输航空地面征候

判断正误True or False: 当探测到可能造成相撞的地形或障碍物时，将在MFD上自动弹出地形显示，且显示范围重置在20海里。When conflicting terrain or an obstacle is detected, the terrain overlay automatically pops up on the MFD and the display range is reset to 20 miles.

误入了雷暴，应将驾驶舱灯光( )。

A. 关闭

B. 调至最亮

C. 调至合适的亮度

气象上的风向是指

A. 风的去向

B. 风的来向

C. 气压梯度力的方向

（案例分析）某航CRJ900在进近过程中，高度30英尺，突然跑道上闯入另外一架飞机，机组决定复飞，副驾驶操纵飞机，机长立即收到襟翼8度，造成飞机突然下沉接地，副驾驶此刻加油门至复飞推力，开始增加姿态复飞，造成机尾擦地。请分析以上机组执行任务复飞动作是否正确以及可能造成擦机尾的原因。(Case analysis) During the approach of one Airline＇s CRJ900 , at 30ft，there＇s suddenly another aircraft incursion the runway, the crew decided to go-around, the copilot took control of the aircraft, and the captain immediately retracted flaps to 8, causing the aircraft suddenly sinking to touch the ground. The copilot advanced the thrust to T0/GA at this moment and started to increase the go-around attitude, causing the tail strike.
Please analyze whether the flight crews perform the go-around maneuver correctly and the reasons that might cause the tail strike.

非精密进近，自动驾驶可使用的最低高度是？What is the lowest altitude the autopilot can be used on a non-precision approach?

A. 600ft AGL

B. 400ft AGL

C. 80ft AGL

D. 50ft AGL

在飞机上看到云顶明亮，说明云层

A. 较薄

B. 较厚

C. 下面有积雪

如果出现下列哪个情况，EICAS主页面会出现在ED2上？The EICAS primary page appears on ED 2if:

A. 在源选择面板上选择ED2;ED2 is selected on the source selector panel

B. ED1失效; ED1 fails

C. ED2显示故障;ED2 shows a fault

D. 在源选择面板上选择DSPL CONT 2;DSPL CONT 2 is selected on the source selector panel

判断正误True or False: 发动机驱动泵（EDP）1A和2A在驾驶舱内没有对应的控制电门。There are no flight deck control switches for EDP 1A and EDP 2A.

进行发动机起动的补充程序前须完成包括正常检查单到且包括“允许起动检查”检查单项目。Accomplish all the normal checklists up to and including the "Cleared to start" checklist before performing the supplementary procedures for engine start.