下列实验方案设计中可行的是 A.用萃取的方法分离汽油和煤油b.加稀盐酸后过滤除去混在铜粉中的�量镁粉和铝粉c.用溶解过滤的方法提纯 Template




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tomski下列实验方案设计中可行的是 a.用萃取的方法分离汽油和煤油b.加稀盐酸后过滤除去混在铜粉中的�量镁粉和铝粉c.用溶解过滤的方法提纯 coloring