900 句单选 -15 字以上 -761[音频][音频]
A. aerobridge
B. stairs vehicle
C. ground marshaller
D. terminal building
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900 句单选 -15 字以上 -817[音频][音频]
A. Unlawful interference on board
B. Hi-jack on board
C. Medical emergency on board
D. Passenger fighting on board
900 句单选 -15 字以上 -317[音频][音频]
A. 26 miles
B. 1 minute
C. 20 miles
D. 24 miles
900 句单选 -15 字以上 -648[音频][音频]
A. Oxygen pressure is dropping
B. Nearly collide with the mountain
C. To fly heading 050
Descend to FL180
900 句单选 -15 字以上 -371[音频][音频]
A. Flow control is exercised
B. Landing delay at the destination airport
C. Maintain FL100
D. Hold at BKM