51、使用票证鉴别仪进行检查的好处主要包括( ).

13、A:( ) will the search take?

12、( ) is the boarding time for your flight?

64、( )means the usual way of doing something.

22、The( )is 25 minutes before( ).

21、( )refers to a place where passengers have to stop in order to be checked by security screeners.

20、( )is the process of checking an individual to verify identity, intentions, authority to be in a restricted area.

19、In order to improve( ),passengers in tourist group,please line up in order according to the list of plane tickets.

18、A:( )

17、A: What’s the check-in time for my flight?

32、设备在1小时内能检查长度为1米的被检物的数量是( )的定义。