飞机的总长度是多少 (CRJ 900)?What is the overall length of the aircraft (CRJ 900)?
A. 35.24 m
B. 36.24 m
C. 37.24 m
D. 38.24 m
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关于高压和低压系统,下列哪种说法正确
A. 一个高压区或高压脊是一个上升气流区;
B. 北半球的高压区有下降气流,南半球的高压区有上升气流;
C. 一个低压区或一个低压槽是一个上升气流区
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整体驱动发电机和APU发电机给飞机AC汇流条以优先顺序供电;给AC BUS 1供电的优先顺序是下列哪个:The Integrated Drive Generators and the APU Generator power the airplane AC busses by a priority system; the switching priority for AC Bus 1 is as follows:
A. IDG2,IDG1, APU发电机,外接电源。IDG 2, IDG 1, APU generator, External Power
B. IDG2,APU发电机,IDG1,外接电源。IDG 2, APU generator, IDG 1, External Power
C. IDG1,APU发电机,IDG2,外接电源。IDG 1, APU generator, IDG 2, External Power
D. IDG1,IDG2,APU发电机,外接电源。IDG 1, IDG 2, APU generator, External Power
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地形警戒等级的安全避让裕度时间为()秒,地形警告等级的安全避让裕度时间为()秒。Safe avoidance margin for the alert level is ()seconds, and the safe avoidance margin for the warning level is ( ) seconds.
A. 60,60
B. 60,30
C. 90,60
D. 30,30
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判断正误True or False:燃油也用于控制和驱动可操作引气活门以及可变几何连动装置,防止发动机压缩机喘振和失速。Fuel is also used to control and actuate the operability bleed valve and variable geometrylinkages for engine compressor surge and stall protection.
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强对流天气临近机场时,下面何种征兆表明有强烈的低空风切变
A. 地面风向雷暴吹去
B. 因强风而形成的沙暴堤
C. 雷暴云顶出现云砧并有远电
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在日常航空天气报告中,电码“VCTS”表示的意思是
A. 机场附近有雷暴,但机场上无雷暴
B. 机场附近有雨,但机场上无雨
C. 机场上有雨
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直线滑行速度大监控地速大于多少节持续三秒以上触发橙色事件?
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哪个电源向应急灯系统供电?Which power source feeds the emergency lighting system?
A. 可用时长约10分钟的独立可充电式电瓶independent rechargeable batteries for approximately 10 minutes duration
B. 可用一定时长的主直流汇流条 main DC bus for an unlimited duration
C. 可用时长约30分钟的APU电瓶 APU battery for approximately 30 minutes duration
D. 可用时长约30分钟的飞机主电瓶 main aircraft battery for approximately 30 minutes duration
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机长对目视飞行的安全负直接责任。
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