当在结冰条件下或结冰探测系统显示ICE（结冰）信号时，发动机整流罩防冰系统必须在ON 位。The engine cowl anti-ice system must be on when in icing conditions or when ICE is annunciated by the ice detection system.

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仪表进近程序起始、中间、最后进近航段的主区的最小越障余度分别是多少？

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飞机试题CRJ900题库练习

在什么情况下＇APU START＇状态信息消失，START 开关/灯熄灭。When will the APU START status message is removed and the switch/light START indication extinguishes

A、达到 95%转速时At 95% rpm

B、达到 99%转速两秒后At 99% rpm + 2 seconds

C、 APU 转速达到 46-60%时(取决于飞行高度) 46 - 60% rpm (altitude dependant)

D、达到 5%转速时About 5% rpm

答案：C

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引气泄漏探测系统是什么时候测试？When was the leak detection system tested？

A. 在初始检查时 during originating check.

B. 持续性测试 continuously tested.

C. 每10分钟 every 10 minutes.

D. 每30分钟 every 30 minutes.

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判断正误True or False：引气总管位于发动机吊架和后设备舱内。The bleed air manifold is located in the engine pylons and aft equipment bay.

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系统3的液压液冷却跟系统1和2 的区别在哪？How is cooling of system 3 hydraulic fluid different from system 1 and 2?

A. 系统3使用热交换器而机翼油箱内的燃油用于冷却系统1和2的液压管路。System 3 uses a heat exchanger and the fuel in the wing tanks cools system 1 and 2 hydraulic pressure lines.

B. 系统1和2使用热交换器而系统3不需要冷却。System 1 and 2 use a heat exchanger and system 3 has no special provision for cooling.

C. 系统3使用热交换器而系统1和2不需要冷却。System 3 uses heat exchangers and system 1 and 2 do not require cooling.

D. 系统1和2靠流经回流线的冲压空气冷却而系统3不需要冷却。System 1 and 2 are cooled by ram air flowing across the return lines and system 3 has no provision for cooling.

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四个变压整流器组件提供：The four transformer rectifier units provide:

A. 应急28VDC备用电源 emergency 28 VDC backup electrical power

B. 重要28VDC备用电源给APU essential 28 VDC backup power to the APU

C. 将115VAC电源转换为28VDC电源 conversion of 115 VAC power to 28 VDC power

D. 冗余28VDC电瓶电源 redundancy 28VDC battery power

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辅助飞行操纵系统包括: The secondary flight controls include:

A. 缝翼和襟翼Slats and flaps

B. 地面扰流板Ground spoilers

C. 副翼和方向舵配平Aileron and rudder trim

D. 水平安定面配平Horizontal stabilizer trim

E. 多功能扰流板(MFS) Multifunction spoilers (MFS)

F. 以上全部All of above

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交流汇流条1出现电路短路，会发生下列哪种情况？AC BUS 1 develops an electrical short, which of the following will occur?

A. 自动转换被抑制 automatic transfer is inhibited

B. 整体驱动发电机自动断开 IDG automatically disconnects

C. 自动转换接通 Automatic transfer is engaged

D. 飞行员开启人工转换 pilot initiates manual transfer

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CRJ900飞机甚高频通讯1天线安装在什么位置？Where does the VHF1 antenna located？

A. 机身前顶部；the forward top of the fuselage

B. 机身前机腹；the forward belly of the fuselage

C. 机身后顶部；the backward top of the fuselage

D. 机身后机腹；the backward belly of the fuselage

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空速大于多少节时会触发超过收起落架限制速度橙色事件？

A. 220

B. 225

C. 230

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仪表进近程序起始、中间、最后进近航段的主区的最小越障余度分别是多少？

A. 分别300米、150米、75米

B. 分别600米、300米、150米

C. 分别300米、300米、150米

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