【简答题】A.It can reduce the number of passenger complaints. B.It can make air travel more entertaining. C.It can cut down the expenses for air travel. D.It can lessen the discomfort caused by air travel.
【简答题】A.It can reduce the number of passenger complaints. B.It can make air travel more entertaining. C.It can cut down the expenses for air travel. D.It can lessen the discomfort caused by air travel.