现有NaOH、Na2CO3和Ba(OH)2三种无色溶液,用一种试剂就可将它们鉴别 发布时间:2017-07-06 18:38 │ 来源:www.tikuol.com 题型:选择题 问题: 现有NaOH、Na2CO3和Ba(OH)2三种无色溶液,用一种试剂就可将它们鉴别出来,这种试剂是( )A.HClB.H2SO4C.Na2SO4D.CaCl2
题型:选择题 .When asked about the murder last night, he wore a smile all the way to appear calm, but the sweat on his forehead _____ him______.A.gave… outB.gave… awayC.gave…upD.gave…off 查看答案