下列变化过程中吸收热量的是[ ] A.Zn与盐酸反应 B.NaOH固体溶于水 C 发布时间:2017-07-27 13:13 │ 来源:www.tikuol.com 题型:选择题 问题: 下列变化过程中吸收热量的是[ ]A.Zn与盐酸反应B.NaOH固体溶于水C.CO2与C反应D.NaCl固体溶于水
题型:选择题 句型转换。1. Lily and Lucy were out yesterday evening. (改为否定句) 2. I went to New York last week. (改为否定句) 3. It was Sunday yesterday. (改为一般疑问句) 4. He did his homework an hour ago. (改为一般疑问句) 5. Mr Green came to China two years ago. (对画线部分提问) 6. I stayed at home just now. (对画线部分提问) 7. He is flying to Beijing now. (用last month改写句子) 查看答案
题型:选择题 . Come _____. I’ll introduce my _____friend, Bob, to you.A.closely; close B.close; closelyC.close; closeD.closely; closely 查看答案
题型:选择题 北京碧溪公司与上海浦东公司订立了一份书面合同,碧溪公司签字盖章后邮寄给浦东公司签字、盖章。该合同于( )成立。A.自碧溪公司与浦东公司口头协商一致并签订备忘录时成立B.自碧溪公司签字、盖章时成立C.自碧溪公司将签字、盖章的合同交付邮寄时成立D.自浦东公司签字、盖章时成立 查看答案