以下关于火警灭火器监控测试描述错误的是（ ）Which description is incorrect for FIRE DETECTION/FIREX MONITOR test?

ANTI-ICE DUC警告信息 (红色)含义是？

CDU上显示的断点A discontinuity displayed on the CDU:

改变4200FMS上的起始机场，ACT/MOD FPLN 页会Changing the ORIGIN airport on the 4200 FMS , ACT/MOD FPLN page will:

导航数据库多久更新一次？How often must the navigation database be updated?

RAIM用于：RAIM is used to:

判断正误True or False：依据庞巴迪发布的《飞机飞行手册》限制章节规定，目前CRJ900机型禁止使用FMS的自动低温补偿功能。According to the LIMITATIONS section of AFM issued by Bombardier, the FMS function of automatic cold temperature compensation is prohibited for CRJ900 aircraft at present.

自动驾驶使用的是哪个飞行计划Which flight plan is followed by the autopilot

判断题： FMS 收集导航传感器上的信息，并执行所有计算、控制和指挥功能。True or False: The FMC collects information from the navigation sensors and performs all computations, control and command functions.

在CDU上，柯林斯4200FMS数据库显示3种不同类型的路点In the CDU, the Collins 4200 FMS database displays three different types of waypoints:

飞行员怎样与FMS互动？How do the pilots interact with the FMS?