飞行中发生特殊情况，机长必须在保证航空器上人员生命安全的前提条件下，积极采取措施保全航空器。

CRJ900有几个ADF接收器？How many ADF receivers does the CRJ900 have?

判断正误True or False: TCAS可以跟踪和监控多达 150 个方式 S 目标并同时显示多达 30 架飞机。The TCAS can track and monitor up 150 Mode ＇S＇ targets and can display up to 30 airplanes simultaneously.

EGPWS视觉警告显示在：The EGPWS visual warnings are displayed on the:

判断正误True or False: 在顶风和上升气流情况下触发风切变警戒。在PFD上显示琥珀色的WINDSHEAR（风切变）信息。Windshear cautions are triggered for headwind and updraft conditions. An amber WINDSHEAR message is displayed on the PFDs.

当音频信息＇TERRAIN, TERRAIN, PULL UP＇ 或＇OBSTACLE, OBSTACLE, PULL UP＇响起时，此时距离撞击预计的地形还有（ ）秒。
When the audio message ＇TERRAIN, TERRAIN, PULL UP＇ or ＇OBSTACLE, OBSTACLE, PULL UP＇ sounds, warning time is approximately ( ) seconds to impact.

ADF1显示为：ADF 1 is displayed as a:

下滑道音响警告可通过（ ）取消：The ＇GLIDE SLOPE＇ aural alert can be cancelled by:

为了预览TCAS显示，飞行员必须选择在（ ）上的TFC按钮。In order to view the TCAS display, the pilot must select the TFC button on the:

判断正误True or False: 当听到TCAS语音＇LEVEL OFF, LEVEL OFF＇，飞行员应减小垂直速度到0英尺/分钟。When TCAS voice message ＇LEVEL OFF, LEVEL OFF＇ sounds, pilot shall reduce vertical speed to 0 ft/min.

判断正误True or False: 如果入侵飞机无运行的方式 S 应答机，TCAS 系统不提供交通冲突的指示。The TCAS system provides no indication of traffic conflicts if the intruder airplane is without an operative Mode ＇S＇ transponder.