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飞机在地面，APU供电，接通两部PACK，发现只有两个CAC工作，这表明： When aircraft is on the ground ,APU supply power,Put the both PACK switchs to ON postion,But omly two CACs operate ，It'smean:

在飞机接近阶段，R2 CAC会自动关断，这是因为： During descent flight phase.The outboard CAC (R2) of the right pack goes to off.This because:

关于CAC电马达的说法，那个正确？ Which of the following about CAC electric motors is right?

关于PCU（ pack control units）的说法，那个正确？ Which of the following about the pack control units (PCU) is right?

Ram Air Fan受控于： Ram air fan is controlled by:

出现PACK TRIP关断后，任何复位？ If PACK TRIP off,How do we do to reset it?

下再循环风扇受控于：

The lower recirculation fan is controlled by：

下再循环风扇上游的HFSOV活门，一旦关闭后，如何复位？ If the lower recirculation air high flow shutoff valve (HFSOV) closed,How do we do to reset it?

P5顶板PACK OFF琥珀灯点亮，表明： The OFF light of PACK on the P5 is ON,The possible reason is that:

一旦ODSC（过热探测器控制组件)探测发现右空调舱过热后，会要什么情况发生？ If the sensor of ODS detected overheat date,What will happen?

地面，发动机功率达到起飞功率，TAT＜35℃，CAC的折流门处于： If engine's power is at takeoff power(N2 more than 90 percent). what happens of The deflector door

满足何种情况下，右下再循环风扇控制电门在OFF位，风扇自动工作（787-9） What condition is met with the P5 right LOWER RECIRC FAN switch OFF,the FAN will be operate?

LLV（Low Limit Valve）在冷却器旁通冷却模式时，处于什么位置？

As condenser bypass mode ，The LLV will be at：

关于PACK的说法那个正确？ Which of the following about the pack control units (PCU) is right?

飞机温度调节系统的热空气来自： The hot air of temperature control system is from :

787飞机客舱有几个舱区？ How many passenger cabin zones are there in airplane?

上再循环风扇位于：

The upper recirculation fan is ：

上再循环风扇有几部？ How many the upper recirculation fan are there in air distribution and temperature control systems

驾驶舱辅助加温器有几种构型？

The supplemental heating system for the flight deck area uses:

进口门加温器有多少个？

How many floor panel surface heaters are there on passenger entry door area?

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