题目内容：
巡航表速250公里/小时以下的航空器，在同航线、同高度目视飞行时，其航空器之间的距离不少于（）A.1000米
B.1500米
C.2000米
参考答案：
选择题：巡航表速250公里／小时以下的航空器,在同航线、同高度目视飞行时,其航空器之间的距离不少于()A.100
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