任何物体只要其温度高于（），都能辐射出红外线。A、零度B、绝对零度C、273℃ 发布时间：2017-09-07 13:31 │ 来源：www.tikuol.com 题型：单项选择题 问题： 任何物体只要其温度高于（），都能辐射出红外线。A、零度B、绝对零度C、273℃
题型：单项选择题 改错1. I saw him coming yesterday.2.—How many is the pork? —Seven yuan a kilo. 3. Don't be later again.4. I am free in the moment. 5. I am afraid this isn't her. 6. In winter there is many ice and snow.7. There is no any time to think about it.8. Hello，May I speak Jim?9. I would like to have other piece of cake.10. What a good work!________ ________ ________ ________ ________ ________ ________ ________ ________ ________ 查看答案
题型：单项选择题 超导现象是指材料在一定条件下内部电阻变为零。这一特性却并未得到实际应用，其原因在于( )。A．超导材料比较稀缺，不易普及B．超导材料过于易贵，普通人买不起C．超导并不能节省多少能源D．超导目前还不能在常温下实现 查看答案