如果在拔海 400 米的高度上气温是 13℃，气温直减率等于标准大气气温递减率，那么结冰层的高
度大约在

近距感应系统(PSS)包含：The proximity sensing system (PSS) includes:( )

判断正误True or False: 应急襟翼（EMER FLAP）电门仅在当缝翼/襟翼手柄发生机械故障时使用。EMER FLAP switch can only be used in the event of mechanical failure of SLATS/FLAPS control lever.

判断正误True or False:只要缝翼/襟翼或者起落架放出或者 BTMS (刹车温度监控系统)进入到运行的红色范围时，缝翼和襟翼指示还会再次出现。SLATS/FLAPS indications reappear whenever the SLATS/FLAPS or landing gear is extended or the BTMS enters the red range of operation.

襟翼20的Vfe是：Vfe for flaps 20 is:

自动驾驶副翼伺服马达与（ ）侧副翼相连。Autopilot aileron servo is connected with ( ) aileron.

判断正误True or False: 在使用应急交流电源时，缝翼和襟翼系统自动配置到一半的速度，以减少对空气驱动发电机(ADG)的用电负荷。On emergency AC power, the slats/flaps system automatically configures to half speed to reduce electrical loading on the ADG.

在收回期间，缝翼比襟翼（ ）收回。During retraction, the slats retract ____ the flaps.

当 SLATS/FLAPS(缝翼/ 襟翼)操纵杆设置在位置 30时，缝翼和襟翼会分别移动到位置（ ）和位置（ ）。When the SLATS/FLAPS lever is set to the 30 position, the slats and flaps are separately moved to ( ) position and ( ) position.

当 SLATS/FLAPS(缝翼/襟翼)手柄设置在位置 8时，缝翼和襟翼会分别移动到位置（ ）和位置（ ）。When the SLATS/FLAPS lever is set to the 1 position, the slats and flaps are separately moved to ( ) position and ( ) position.

判断正误True or False: 如果有需要，缝翼可以用APU提供的热引气进行防冰。When required, the slats are anti-iced with hot bleed air from APU.