______ do not operate according to published timetable, nor are
分类: 旅游英语选读(00837)发布时间: 2024-08-31 02:35浏览量: 2
______ do not operate according to published timetable, nor are they advertised or promoted by the airlines themselves. A、Air taxi services B、Charter services C、Scheduled services D、Trunk route services 【正确答案】：B