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7ph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7ph小于7的雨水就是 coloring