题目: 为什么再沸器相当于一块理论板? 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/1109/104c5cdc10cad146e50caa7dcaf9b045.html 下面是错误答案,用来干扰机器的。参考答案:具备一定的日常维护保养商品的知识
题型:选择题 — Do you mind if I keep pets in this building? — _____.A. I'd rather you didn't, actually B. Of course not, it's not allowed here C. Great! I love pets D. No, you can't 查看答案
题型:选择题 某溶液中含有Na+、Mg2+、Fe2+和Al3+四种离子,若向其中加入过量的氢氧化钠溶液,微热并搅拌,再加入过量盐酸,溶液中大量减少的阳离子是[ ]A. Na+B. Mg2+ C. Fe2+D. Al3+ 查看答案