题目内容

一架飞机所带燃料最多用6小时,出发时顺风,每小时飞1500千米;飞回时逆风,每小时飞1200千米,此飞机最多飞出多少小时就需往回飞?()

A. 40758
B. 40850
C. 3
D. 40666

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