56、X射线机通道内有异物或光障上有遮挡物,会有( ).

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。

19、Sorry, sir, because( ),you can’t take it on board the plane.

18、You may get your( )at the check-in counter and then you have to go through the security check.

17、I am the( ) of the group.

16、A:What will happen to me if I refuse the security check?

15、A: Where’s your destination? B:( ).