60、下列关于史密斯海曼Hi-scan6040i机型X射线机功能键说法错误的有( )。

　传送带控制键左上方为传送带倒退键

　按下放大倍数选择键后,可逐级选择图像放大倍数,可放大1-8倍

　按下放大倍数选择键后,可逐级选择图像放大倍数,放大步进为1

　按下放大还原键可将放大图像还原成原始比例图像

正确答案：AC

6、( ) connect smaller cities and towns with each other or with the major centers or the major airports.

7、A place which is set for the end of a journey is called( ).

6、( )are those which operate between major population centers.

7、The baggage allowance for First Class is( ).

6、The flight from China to America is called a( ).

7、A( ) leaves at the same time on the same day to the same destination.

6、The flight from Shanghai to Beijing is called a( ).

100、检查中看到水果类需要注意有无水果刀;注意有无小动物如小鸟、乌龟、蜥蜴等。

99、掌握旅客及其行李物品差异有助于维护空防安全,提高安全检查的水平。

98、国家正式办理外交事务的机构叫外交机构,如驻外使领馆等,其他各种对外机构统称外事机构或涉外单位。