硫酸-荧光反应为地西泮的特征鉴别反应之一。地西泮加硫酸溶解后,在紫外光灯下显() A 发布时间:2017-09-08 00:45 │ 来源:www.tikuol.com 题型:单项选择题 A1/A2型题 问题: 硫酸-荧光反应为地西泮的特征鉴别反应之一。地西泮加硫酸溶解后,在紫外光灯下显()A.红色荧光B.橙色荧光C.黄绿色荧光D.淡蓝色荧光E.紫色荧光
题型:单项选择题 A1/A2型题 I believe that those mountains ____ with trees in a few years. [ ]A. are covered B. will be covered C. are covering D. will cover 查看答案