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【单选题】
关于航班的定义不正确的是 。A.
、航班是根据时刻表的运输生产飞行
B.
、航班是按照规定的航线飞行
C.
、航班分为去程航班和回程航班
D.
、航班是指不经过经停站，直接到达终点站的运输生产飞行
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