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单选题
THE PURPOSE OF THE EMERGENCY RAM AIR INLET IS TO:
A
Ventilate the passenger cabin and cockpit when both packs are off inflight.
B
Control the temperature of the passenger cabin and the cockpit.
C
Cool the air in the mixing unit before it goes to the passengercabin.
答案解析
正确答案：A
解析：
题目解析
答案选项A：Ventilate the passenger cabin and cockpit when both packs are off in flight.
正确答案：A
解析：紧急RAM气入口的目的是在飞行中当两个组件关闭时为客舱和驾驶舱通风。这意味着当飞机的压缩空气系统（packs）都关闭时，紧急RAM气入口允许空气流入客舱和驾驶舱，以确保乘客和机组人员的舒适和安全。
