单项选择题
A.问讯柜台-lost and foundB.到达厅-arrival hallC.厕所-toiletD.电梯-elevator
A.Sorry,Sir,batteries can not be checked in.B.Sorry,Sir,there is no aisle seat available.C.Sorry,Sir,power bank is not allowed to be checked in.D.Sorry,Sir,lighter can not be checked in.
A.航班正常率B.航班上座率C.航班载运率D.航班放行率