60、下列关于公安部一所CMEX-V6550B机型X射线机功能键说法正确的有( )。

　图像边缘增强键默认状态下为无效状态

　有机物无机物剔除键按一次为有机物剔除

　按下图像回拉键后可以使用左、右键回查已检行李图像

　按下可变吸收率键后可以使用左、右键逐渐加亮或加暗图像

正确答案：CD

9、A: Could you tell me why Flight MU595 hasn’t departed yet?

32、设备显示薄有机物图像的能力是( )的定义

19、Instead of “Please erect your trunk on the conveyor belt”, we can also say( ).

18、CA973 is the( ).

17、I’m afraid you have to stay here for the night, but the airline( ) your meals and accommodations.

16、A: Do you know why my flight has been delayed?

17、Sorry, sir. As an airport staff working in the restricted area, you should wear your( )on your uniform during working hours.

16、The ( )can be exempt from security screening.

15、( )means saying sorry to someone that you’ve hurt them or caused trouble for them.

14、( ) is the place where airplanes take off or land.