题目内容
短通话
A. For traffic avoidance.
B. For separation.
C. For terrain clearance.
D. For noise abatement.
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短通话
A. Climb to FL210.
B. Descend to FL180.
C. Expedite climb
D. Stop climbing and maintain FL180.
短通话
A. Climbing to FL210.
B. Climbing to FL180 immediately.
C. 12 minutes delay.
D. Avoiding traffic.