（案例分析） 某日一航班（CRJ900）从重庆飞呼和浩特，起飞后出现后货舱烟雾警告信息，机组执行检查单后，后货舱烟雾持续存在，而当前着陆重量为36吨，请问，机组是马上着陆还是等待耗油?如果马上落地，如何去做，应注意些什么?如果需要耗油，注意些什么？(Case Analysis) One day a flight (CR900) flying from Chongqing to Hohhot, after take-off, a smoke warning message appeared in the AFT cargo compartment. After the crew executed the checklist, the smoke in the AFT cargo compartment persisted, and the current landing weight was 36 tons. Questions: should the crew land immediately or hold for fuel consumption? If land immediately, how should you do, what should you pay attention to? If fuel consumption was required, what should you pay attention to?

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?

当ADG放出时，哪个ACMP泵由ADG直接供电？Which ACMP is directly powered by the ADG when ADG deployed?

ADG放出时，会给ACMP 3B供电：The ADG, when deployed, energizes ACMP 3B:

判断正误True or False：
如果机组氧气系统出口气压降低至1410 psig以下，EICAS主页将显示＇氧气气压低＇的警戒信息，并且状态页的指示灯将转为琥珀色。If the outlet pressure of the crew oxygen system decreases below 1410 psig, the OXY LO PRESS caution message will be displayed on the EICAS primary page and the indication on the status page will turn amber.