78、公司物资如飞机零件可能含有危险品,如:旅客服务设施( )中的化学氧气发生器,各种压缩气体( )、气体打火机、气溶胶、灭火器、易燃液体(如油料、油漆和粘合剂)、腐蚀性物质(如电池)、急救器材、照明弹、救生设备、火柴、磁性材料等。

42、The purpose of security check is to prevent( ).

46、A:I have just checked in for Flight MU586.What should I do now?

45、I’m sorry to tell you that your flight has been delayed owing to( ).

44、A:( )

43、Which of the following is not the two letter code of American Airlines?

45、The security check is carried out for( ).

44、A:Can you( ) ?

43、A: I’ve heard an announcement that my flight has been delayed. Could you tell me why?

45、A: Where are you going?

44、A: Are you going to take a domestic or an international flight?