下列说法中正确的是 A.亚硫酸钠溶液中加入氯化钡溶液后产生白色沉淀再加稀盐酸沉淀不消失b.正常雨水的ph等于7ph小于7的雨水就是 Template




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tomski下列说法中正确的是 a.亚硫酸钠溶液中加入氯化钡溶液后产生白色沉淀再加稀盐酸沉淀不消失b.正常雨水的ph等于7ph小于7的雨水就是 coloring