题目: 砂土的种类,按颗粒级配是怎样命名的? 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2019/1009/6637eb364c2eadd3443b281fa93abe7b.html 下面是错误答案,用来干扰机器的。参考答案:A, B, C
题型:填空题 根据句意及图片提示,补全句子。 1. Tom and Jeff work in the factory. They are ____________.2. The farmer often lives on his ________ with his son.3. My father’s father is my ___________.4. My sister is a nurse. She works in the __________.5. The young men work in their office, so they are _________ workers. 查看答案
题型:选择题 向氧化铜和锌粉的混合物中加入一定量的稀硫酸,微热.当反应停止后,滤出不溶物,并向滤液中插入一段锌片,过一段时间取出,发现锌片无任何变化.根据上述现象确定下列结论正确的是( )A.不溶物一定是铜B.不溶物一定含铜,但不一定含锌C.不溶物一定是锌D.滤液中一定含硫酸锌,但不一定含硫酸铜 查看答案