（案例分析）某航班在上客快结束时EFB收到舱单后一直无法签收，机长认为是机场信号接收问题，移动位置可能好一点,为保障航班正常，申请正常推出后尝试签收。飞机滑出上跑道后机长电话告知AOC电子舱单无法签收，航班滑回，你认为机长的决策是否正确？(Case analysis) A flight crew received loadsheet on EFB when the passenger boarding were to be completed soon, but it could not be signed, the captain thought the problem resulted from signal receiving, it could be improved by moving the aircraft to another place. For guaranteeing flight nomality, the flight crew requested a normal push-back and then had another try on signing. After the aircraft taxied out and entered runway, the captain informed the AOC by phone that the electronic loadsheed could not be signed, and the plane would taxi back. Do you think the captain＇s decision was correct and why?

发动机驱动泵（EDP）安装在（ ）。The EDPs are mounted on（ ）.

HYD 1 LO PRESS警戒信息指示（ ）。HYD 1 LO PRESS caution message indicate that ( ).

系统3的液压液冷却跟系统1和2 的区别在哪？How is cooling of system 3 hydraulic fluid different from system 1 and 2?

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?