积状云中的降水是
A. 连续性降水
B. 间隙性降水
C. 阵性降水
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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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CRJ900的AC电源是：AC electrical power on the CRJ900 is:
A. 115伏，400赫兹，单相。115 volt, 400 Hz, single phase
B. 115伏，60赫兹，三相。115 volt, 60 HZ, three phase
C. 110伏，400赫兹，三相。110 volt, 400 Hz, three phase
D. 115伏，400赫兹，三相。115 volt, 400Hz, three phase
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冰雾会在静风温度或低于-32℃情况下形成。它最有可能形成在城市区域，还是野外区域？
A. 城市区域
B. 野外区域
C. 二者均可能
D. 二者均不可能
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下列哪个飞机表面是气源防冰Which aircraft surfaces are pneumatically anti-iced
A. 翼上小翼和机翼前缘Winglets and wing leading edges
B. 垂直安定面和机翼前缘 Vertical stabilizer and wing leading edges
C. 机翼和水平安定面前缘Wing and horizontal stabilizer leading edges
D. 机翼前缘Wing leading edges
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备降场具有两套以上非精密进近设施与程序并且能提供不同跑道进近，最低下降高度（MDA）/最低下降高（MDH）增加 ( )米，能见度增加( )米，在两条较低标准的跑道中取较高值；
For the airport with two or more sets of non-precision approach facilities and procedures and providing different runways for approach, MDA/MDH shall be increased by
( )meters and the visibility by ( ) meters, choose the runway whichever has a higher value if there are two runways with lower standards;
A. 30 800
B. 60 800
C. 30 1600
D. 60 1600
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＇L BLEED DUCT＇警告信息和音响警告＇Bleed Air Duct＇指示：＇L BLEED DUCT＇ warning message and aural warning＇Bleed Air Duct＇ indicates:
A. 防冰和漏气探测器（AILC）探测到左侧引气管道引气泄露。 A bleed air leak detected by AILC in the left bleed ducting.
B. 防冰和漏气探测器（AILC）探测到右侧引气管道引气泄露。 A bleed air leak detected by AILC in the right bleed ducting.
C. 引气泄露后引气关闭且系统未选择关闭。Bleed shutdown after bleed leak and system not selected off.
D. 在通电自检测试中（PBIT），左引气管路的漏气双探测环路失效。 Loss of both leak detection loops in left bleed ducting during PBIT.
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判断正误True or False：跳开关面板1位于驾驶舱，跳开关面板2位于后设备舱Circuit breaker panel 1 is located on the flight deck, and circuit breaker panel 2 is located in the aft equipment bay
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一旦IDG DISC灯亮起，IDG可能：Once the IDG DISC lamp illuminates, the IDG may:
A. 通过按压IDG DISC电门可以重新连接。 Be reconnected by pressing the IDG DISC switchlight.
B. 在空中不能重新连接。Not be reconnected in flight.
C. 通过循环发电机电门和按压IDG DISC 电门在空中可以重新连接。Be reconnected in flight by cycling GEN switch and pressing IDG DISC switchlight.
D. IDG滑油冷却充分后通过按压IDG 电门可重新连接。Be reconnected by pressing IDG switchlight after IDG oil has cooled sufficiently
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在飞行关键阶段 ，飞行机组每个成员必须在指定的执勤位置上系好( ) 。During the critical flight phase, each flight crew member must fasten ( ) on their designated duty position.
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