如图所示是一只白炽灯的效率图，根据此图可以知道转化成的内能为_____J ，白炽 发布时间：2017-08-05 22:06 │ 来源：www.tikuol.com 题型：填空题 问题： 如图所示是一只白炽灯的效率图，根据此图可以知道转化成的内能为_____J ，白炽灯的效率为_____ 。
题型：填空题 基础知识 从所给单词中选用单词的适当形式填空。pension protest illegally concern welfare fancy reward adjust budge spear accomplish emerge furnish fold trial opera1. ______ reform is likely to be a major focus of debate during the conference which starts on Sunday. 2. She was given a medal as a _______ for her service. 3. The paper should be ___________ in half.4. The general said all means will be used to end the ___________.5. It is ___________ to drive through a red light. .6. I ___________ a great deal of work in the last few months.7. They scouted around for some antiques to ___________ their new apartment.8. She agreed to employ me for a ___________ period. 9. I will show ___________ for my friends even if it is only a comforting word.10. Experts say many current___ plans do not have enough money to provide the benefits promised to workers.11. She finally ___________ from her room at noon after staying there for the whole morning.12. He can't ___________ himself to the whirl of modern life in this big city.13. The company had no choice but ___________ $10 million for advertising.14. The hunter hurled his___________ at the tiger.15. The magazine was packaged in a___________ plastic case with attractive graphics. 查看答案
题型：填空题 甲、乙、丙为初中化学常见物质，甲分别能与乙和丙发生反应，乙又能与其它物质发生反应得到丙。回答下列问题：（1）若甲、丙分别是气体单质，乙是固体单质。①甲的化学式是_____；② 乙转化为丙的化学方程式是 。（2）若甲、乙是氧化物，丙可用于改良酸性土壤。则甲、丙的化学式分别是 。（3）若乙、丙类别（指单质、酸、碱、盐或氧化物）相同，且甲、乙、丙中均含有一种相同元素，①乙转化为丙的化学方程式是 ， ②反应的基本类型是 。（4）若甲是一种酸。下列说法中，正确的是 （填序号）。①乙、丙可能都是单质 ②乙、丙可能都是盐③丙一定不能转化为乙 ④三个反应可能都是置换反应 查看答案
