A.材料分辨力-grayleveldifferentiation B.灰度分辨力-organic/inorganicdifferentiation C.有用有机物分辨力-usefulpenetration D.空间分辨力-spatialresolution
A.将身份证相片面沿此平面竖向插到底 B.发出“滴滴…注意!”的声音 C.有提示可疑证件的功能 D.色彩提示
A.passport control B.personal search C.baggage search D.check-in procedures