多项选择题
A.气质差异 B.性别差异 C.散客与团体旅客的差异 D.职业差异
A.仪容仪表规范 B.着装规范 C.语言行为规范 D.礼节礼貌规范
A.An international flight B.I’m going to Shanghai C.It is due to bad weather conditions D.A domestic flight