31、形式上的( )是职业道德的特点之一。

15、A: Could you tell me why the flight to Beijing has been( )?

15、设备能分辨单根实芯镀锡铜线的能力,一般用线的标称直径( )和线号( )表示是( )的定义。

5、The two letter code of Alitalia is( ).

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

8、( ) is the place at a port ,airport or border where travellers’bags are inspected to see if any goods are being carried illegally.

7、The staff should give the( ) a manual search.

16、X射线机有用穿透分辨力用英文表示为( )。

7、Passengers can go to the( ) to check in for the flight.

6、Airport fee is airport( )and construction fee.

16、X射线机线分辨力用英文表示为( )。