草稿行的功能是？What is the function of the scratchpad line?
A. 在不同页面输入特定数据 to access specific data on different pages
B. 显示与选择的数据相关的特定信息 show specific information related to the selected data
C. 显示用字母数字键输入的信息 displays information entered by the alphanumeric keys
D. 清除上次输入的字符 clears the last character entered
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下述何种过程可使辐射雾消散＿＿
A. 黎明前云量减小
B. 风速由 2 米／秒增大到 5 米／秒
C. 地面水汽蒸发
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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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稳定进近包含哪些要素？What elements does a stable approach include?
A. 所有简令和检查单已完成 All briefings and checklists have been completed.
B. 飞机处于正确的飞行航径 The plane is on the correct flight path.
C. 推力调定与飞机的形态相适应 Thrust setting is compatible with the aircraft configuration.
D. 飞机未建立正确的着陆形态 The aircraft did not establish the correct landing configuration.
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关于对流性环流的发展，下述哪种情况是正确的
A. 因冷空气下沉而促使暖空气上升；
B. 暖空气密度小，自动上升；
C. 对流性环流周围的冷空气以较大的速度下降，因而迫使较暖的空气上升
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目视飞行时,两机在同一高度上对头相遇,应当各自向右避让,相互间的间隔应当保持在
A. 300 米以上；
B. 500 米以上；
C. 800 米以上
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哪一个EICAS页面会显示关于舱门的信息Which EICAS pages display information about the doors、
A. 主页，状态页和舱门简图页 primary page, status page and DOORS synoptic page
B. 舱门简图页，交流电源简图页，状态页DOORS synoptic, AC ELECTRICAL synoptic page, status page
C. 主页和舱门简图页Primary page and DOORS synoptic page
D. 状态页和舱门简图页Status page and DOORS synoptic page
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CRJ900经批准的起飞和着陆最大顺风风量是____m. For CRJ900，the maxmum certified tailwind component for takeoff andlanding is____m.
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如果对飞机能否安全着陆有怀疑，或在目视盘旋的同时失去了目视参考物，则应执行复飞程序。If there is a doubt as to whether the aircraft can land safely, or if visual reference is lost while visually circling, a missed approach procedure should be performed.
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判断正误:发动机起动后，当两个发动机都稳定在慢车位，并且滑油压力正常， EICAS 逻辑将用 N1 风扇振动值表取代模拟的滑油压力表。True or False:When both engines are started and oil pressure is normal, the oil pressure gauges revert to N1 vibration gauges.
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