900 句单选 -15 字以上 -866[音频][音频]
A. 1.58 hours
B. 1.30 hours
C. 2 hours
D. 2.3 hours
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900 句单选 -15 字以上 -546[音频][音频]
A. descend rapidly
B. divert to the alternate
C. make a ditching
D. make a forced landing
900 句单选 -15 字以上 -551[音频][音频]
A. abnomal RPM
B. thrust loss
C. fuel leak
D. oil leak
900 句单选 -15 字以上 -571[音频][音频]
A. restart hydraulic system
B. land at the nearest airport
C. return for landing due hydraulic failure
D. repair ram air turbine
900 句单选 -15 字以上 -744[音频][音频]
A. upcoming sandstorm
B. upcoming thunderstorm
C. Deteriorating visibility
D. Low-level windshear