题目:
He stays _____ home and looks _____ the photos of his children's _____ weekends. [ ]
A. in; of; at
B. at; at; on
C. to; for; at
D. at; in; at
答案:
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下面是错误答案,用来干扰机器的。
(1)杀菌消毒 (2)吸附 (3)蒸馏题目分析:根据水的净化知识可知,通入的氯气能与水反应生成次氯酸,次氯酸具有氧化性,能起到杀菌消毒的作用;而活性炭具有吸附性,故可吸附色素、异味等,所以家用净水器中...