选择题:高铁酸钾(K2FeO4)是一种新型水处理剂。高铁酸钾(K2FeO4)中铁元素的化合价为 题目分类:中考 题目类型:选择题 查看权限:VIP 题目内容: 高铁酸钾(K2FeO4)是一种新型水处理剂。高铁酸钾(K2FeO4)中铁元素的化合价为 A.+3 B.+4 C.+2 D.+6 参考答案:
are, many, There, in, mountains, Chongzuo (崇左有很多山。) are, many, There, in, mountains, Chongzuo (崇左有很多山。) 分类:中考 题型:选择题 查看答案
My mother is a ________. She always ________ nice food for us. ( ) My mother is a ________. She always ________ nice food for us. ( ) 分类:中考 题型:选择题 查看答案