A、口頭形式 B、電話 C、口頭或書面形式 D、書信
A、What are the major problems in your baggage? B、What are the major articles in you rbaggage? C、Whatare the minor articles in your baggage? D、What are the articles in your baggage?
A、國際航空電信協(xié)會(huì)-SITA B、國際航空運(yùn)輸協(xié)會(huì)-IATA C、國際民航組織-CIAO D、中國民航局-CAAC