生活中的下列现象,用分子的相关知识加以解释,其中不正确的是( ) A.室内插花,

题型:选择题

问题:

生活中的下列现象,用分子的相关知识加以解释,其中不正确的是(  )

A.室内插花,满室飘香,说明分子不断地运动

B.热胀冷缩,说明分子大小随温度而改变

C.10mL酒精和10mL水混合后,体积小于20mL,说明分子之间有间隔

D.湿衣服放在火炉旁,干得较快,说明分子运动速率随温度升高而增大

考点:化学反应微观示意图
题型:选择题

阅读理解。

     My name is Philip. Now I live in China. On Sunday my father often takes me to movies. My favorite

movies  are  action  movies. My  father  likes them, too. Many  young  people like this  kind  of movies.

Because they're exciting. My good friend, Jim, likes thrillers best. I don't like thrillers, I think they are

scary and boring. Jim likes Beijing Opera, too. And he wants to be a Beijing Opera artist.

1. When does Philip often go to movies with his father?

A. Sunday      

B. Birthday      

C. Festival

2. What kind of movies do many young people like?

A. Thrillers    

B. Action movies  

C. Cartoon movies

3. Why does Philip like action movies?

A. Because they're scary  

B. Because they're interesting

C. Because they're exciting

4. What are Jim's favorite movies?

A. Thrillers    

B. Action movies  

C. Beijing Opera

5. How does Philip feel about thrillers?

A. Exciting    

B. Best          

C. Scary and boring

题型:选择题

老年期抑郁症病人与其他年龄段抑郁症相比,其特点是()

A.心因突出

B.自卑观念突出、自我评价低

C.孤独感突出,多疑、敏感,病态观念突出

D.记忆力、注意力障碍突出

E.躯体不适,情绪不稳,易激惹突出

题型:选择题

设计数据库概念模型最著名、最实用的方法是P.P. S.Chen于1976年提出的 【18】 

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关于卫生技术评估的内容,下列哪个是错误的:()

A.卫生技术的功效评价

B.卫生技术的安全性评价

C.卫生技术的经济性评价

D.卫生技术的社会影响评价

E.卫生技术的原理评价

题型:选择题

以下哪种方法可以获取当前已装载动画数据的容量信息()

A、getBytesTotal()

B、getBytesLoaded()

C、ifFrameLoaded()

D、getURL()

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