澄清透明溶液中能大量共存的离子组是( ) A.HCO3-、Na+、K+、H+ B 发布时间:2017-05-05 10:43 │ 来源:www.tikuol.com 题型:选择题 问题: 澄清透明溶液中能大量共存的离子组是( )A.HCO3-、Na+、K+、H+B.NO3-、Cu2+、Na+、OH-C.Al3+、K+、NO3-、OH-D.Fe3+、H+、Na+、Cl-
题型:选择题 —What are you going to do this Sunday? —I'd like some washing. [ ]A.doing B.to do C.do D.will do 查看答案
题型:选择题 Busy _______ he was, he managed to spare some time to help plan the project.A.whileB.althoughC.asD.when 查看答案