下列煤气中热值最高的是()。 A.焦炉煤气 B.转炉煤气 C.铁合金炉煤气 D.高炉 发布时间:2018-05-02 23:55 │ 来源:www.tikuol.com 题型:单项选择题 问题: 下列煤气中热值最高的是()。A.焦炉煤气B.转炉煤气C.铁合金炉煤气D.高炉煤气
题型:单项选择题 Complete the passage with the proper words in the box. Each word can only be used once. One word is not needed. A. understanding B. industry C. range D. improve E. adopted F. pronounce G. flooding H. valued I. operating J. tend The speeches of US President Barack Obama have become the favorite way for Japanese to study the English language. Japanese publishers have been ___小题1:___ the market with over a dozen language-learning titles. Companies are trying to enter a foreign-language teaching ___小题2:____ which was ____小题3:___ at $8.6 billion in 2008 by some research institutes.Why is there such a huge Japanese market for recordings and books of Obama's speeches? Japanese say that listening to Obama speak is a good way to ____小题4:__ their English-speaking skills. Most Japanese, including those studying English, would have difficulty __小题5:_ a speech given by a native English speaker. But “Obama's English is easy to understand because he can ____小题6:___ words clearly and speaks at a relatively slow speed,” said Professor Tadaharu Nikaido, a communication specialist. “Movies ____小题7:__ to be the most difficult for Japanese, especially when actors mumble (咕哝) their words.” Obama sets his ____小题8:___ of vocabulary wide enough to accommodate (迎合) all levels of English speakers, Nikaido added, and at the lower end, it sometimes comes within the range of non-native speakers' comprehension.The Obama speech phenomenon has given way to more books and magazines that focus on how Obama's communication skills might be ___小题9:___ in Japan for business and political purposes. At least half a dozen books and magazine covers of this kind have appeared in the past several months in Japan. 查看答案
题型:单项选择题 (1)“立方烷”是一种新合成的烃,其分子为正方体结构,其碳架结构如右图所示: “立方烷”的分子式是_________________;该立方烷的二氯代物具有同分异构体的数目是___________________。(2)写出分子式为C4H10O属于醇类的可能结构简式并命名:__ _______________ 。 查看答案
题型:单项选择题 在建国初期土地改革、抗美援朝、 * * 反革命三大任务完成以后,1953年到1956年之间中国国内的主要矛盾是()A.无产阶级和资产阶级之间的矛盾B.社会主义道路与资本主义道路之间的矛盾C.先进的生产关系和落后的生产力之间的矛盾D.人民日益增长的物质文化需要和生产力不能满足这种需要之间的矛盾 查看答案