单选题:通常地表水的处理方法为( ) 题目分类:市政公用工程 题目类型:单选题 查看权限:VIP 题目内容: 通常地表水的处理方法为( ) A.沉淀→混凝→过滤→消毒; B.原水→混凝→沉淀或澄清→过滤→消毒 C.过滤→沉淀→混凝→消毒; D.过滤→混凝→沉淀→消毒 参考答案: 答案解析:
Echo _____ for half a month. She’ll be back in two months. Echo _____ for half a month. She’ll be back in two months.A.left B.leaves C.has 分类:市政公用工程 题型:单选题 查看答案
Let's go out for a walk, _________ ? Let's go out for a walk, _________ ?A.won't you B.don't we C.why not D.shall we 分类:市政公用工程 题型:单选题 查看答案
I'm sure the book is very ________ and children are ______ I'm sure the book is very ________ and children are ______ it.A.interested, int 分类:市政公用工程 题型:单选题 查看答案