以下物质必须用间接法制备标准滴定溶液的是()。A.K2Cr2O7 B.Na2CO3 发布时间:2017-06-09 08:25 │ 来源:www.tikuol.com 题型:单项选择题 问题: 以下物质必须用间接法制备标准滴定溶液的是()。A.K2Cr2O7B.Na2CO3C.NaClD.NaOH
题型:单项选择题 Jim can you tell me _____ every week? [ ]A. when do you have class meetings B. when you have class meetings C. when did you have class meetings D. when you had class meeting 查看答案