43、( )is the carriage of goods from place to place by air.

43、It is prohibited to carry any( ) on the plane.

46、Which of the following is not liquid article?

45、Which of the following is liquid article?

44、The article that can burn easily is( ).

43、Which of the following cannot be taken on the plane?

47、Which of the following is forbidden articles?

46、Which of the following is not the flight number of Air China?

45、Airport fee is airport( )and( ) fee.

44、Security check usually consist of( ).

75、( )refers to goods prohibited by law or treaty from being imported or exported.