在含有Fe3+和Al3+的溶液中滴加NaOH溶液时，下列关于沉淀与滴入NaOH溶 发布时间：2017-05-08 21:59 │ 来源：www.tikuol.com 题型：选择题 问题： 在含有Fe3+和Al3+的溶液中滴加NaOH溶液时，下列关于沉淀与滴入NaOH溶液体积的图示中正确的是（ ）A．B．C．D．
题型：选择题 根据对话内容，从对话后的方框中选出能填入空白处的最佳选项，使对话意思完整、通顺。选项中有一项是多余的。Jane: Hi, Alan. 1_______ How are you? Alan; Hi, Jane. I'm fine, thank you. And you? Jane: I'm fine, too. 2_______ Alan: I have been to Shanghai. I stayed there for about one month. Jane: You had a great time there, I am sure. Alan, I've come to return the book I borrowed from you two months ago. 3_______ Alan: It doesn't matter. 4_______ Jane: Yeah, I like it a lot. I've read it again and again. The writer is one of my favorites. Alan: Really? I still have some of his books. 5_______ Jane: Thank you so much. I can't wait to read them. A. You can borrow them any time. B. I'm sorry I have kept it so long. C. Where have you been these days? D. I am sorry I lost it two weeks ago. E. Long time no see. F. Do you like it? 查看答案
题型：选择题 据报道，中国已初步选定朗伊尔宾（北纬78°、东经15°附近）为“中国北极科学探险考察站”站址。根据中国北极科学探险考察站经纬度位置判断，它位于上海（31°N，121°E）的（）A.东南方向B.东北方向C.西北方向D.西南方向 查看答案
