铁的氧化物可用于脱除煤气中的H2S,有一步反应为:Fe3O4(s)+3H2S(g)+H2(g)⇌3FeS(s)+4H2O(g)其温度与平衡常数的关系如图所示.对此反应原理的理解正确的是( )
A:H2S是还原剂
B:脱除H2S的反应是放热反应
C:温度越高H2S的脱除率越大
D:压强越小H2S的脱除率越高
____比较适合用来擦汗。
根据短文内容和所给汉语提示,写出短文空白处各单词的正确形式,每空限填一词。 My friend Nancy is ____(15) years old. She is a clever girl in my class. She comes from ____ (日本).But she likes China very much. Now she ____ (居住) in Shanghai with her parents. Her house is not in the ____(中心)of the city but she enjoys it. There ____( 有 )a river through her neighborhood.____ (在对面) from her building is an old park.____ (如果) she is tired, she can ____(散步 ) in it to relax herself. She says she wants to be a ____ (女警察) though sometimes it is kind of ____ (危险的)
用一个平面去截一个正方体,截面不可能是( )
下列将声波转化为神经冲动的是( )
下列对公民监督权的认识,不正确的是( )
①公民行使监督权就是监督红十字会的工作
②公民行使监督权必须采取合法方式坚持实事求是的原则
③公民行使监督权有利于发扬社会主义民主扩大公民的基本政治权利
④公民可以通过信访举报制度、参加民主评议会和网上评议政府等民主监督的新形式、新方法行使监督权