（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.

跟Skydrol ® 特种液压油有关的危害是什么？What are the dangers associated with Skydrol ® hydraulic fluid?

下列哪些飞机组件是靠三个液压系统供压的？Which of the aircraft services below are powered by all three hydraulic systems?

飞行中，当泵电门处于OFF位置且ADG放出时，下列哪个描述是正确的？In-flight, with the pump switches in the OFF position and the ADG deployed, which of the following statement is true?

通常几个液压系统给任一机尾单个飞行操纵面提供动力？How many hydraulic systems normally power any single flight control surface on the tail?

有（）电动液压泵。There are _ electrically driven hydraulic pumps.

左内侧多功能扰流板由液压系统（）提供动力：The left inboard multi-function spoiler is powered by hydraulic systems:

哪些液压泵是发动机驱动的？What Hydraulic pumps are engine driven?

液压系统1和2液压油使用位于后设备舱的单个空气/液压热交换器冷却。 以下适用于所描述的系统的是：Hydraulic systems 1and 2 hydraulic fluids are cooled using a single air/hydraulic fluid heat exchanger which is located in the aft equipment bay. The following applies to the described system.

电动操作液压关断活门安装在发动机驱动泵1A和2A的供应管路上，且通常是打开的。这些活门可被关闭通过：The electrically operated hydraulic shutoff valves are installed in the supply lines of engine driven pumps 1A and 2A, and are normally open. These valves can be closed:

液压电门1B和2B电门设定到AUTO，什么时候ACMP泵会打开？With the hydraulic switches 1B and 2B set to AUTO when will the ACMPs come ON?