在标准状况下,将SO2和Cl2气体混合,测得混合气体相对HCl的密度是1.85。

题型:计算题

问题:

在标准状况下,将SO2和Cl2气体混合,测得混合气体相对HCl的密度是1.85。将该混合气体2.24L溶于100mL水中制成溶液,已知该溶液的密度为1.05  g/cm3。(已知:SO2+Cl2+2H2O=H2SO4+2HCl)计算该混合溶液中H+的物质的量浓度。(计算最终结果保留两位小数)

考点:单质硫金属硫化物二氧化硫三氧化硫
题型:计算题

宋代郭若虚在《图画见闻志》中写道:“若论佛道人物仕女牛马,则近不及古;若论山水林石花鸟禽鱼,则古不及近。”“古不及近”的主要原因是(  )

A.宋代宫廷画院的空前活跃

B.传统的“写实”风格逐渐消失

C.宋代画家逐渐注重内心情趣

D.宋代画家技艺的提高和进步

题型:计算题

阅读理解

Dear Amy,

     Susan is my pen pal. She's from London, England. She speaks good English. She's now in Shanghai

with her parents, because they work in Shanghai. Susan can speak a little Chinese.

     There are five people in her family, her parents, her two brothers and she. Her brothers aren't in

China. They are in England.

     She likes singing and dancing very much. Her favorite subject is music. She likes going to the movies

on weekends. She thinks it's fun. I think she's a nice girl.

     Do you want Susan to be your pen pal?

                                                                                                                                        Yours,

                                                                                                                                        Sophia

l. Susan is Sophia's        .          

A. sister      

B. aunt            

C. cousin            

D. pen pal

2. Where does Susan live now?

A. In Shanghai.                      

B. In New York.

C. In Beijing.                        

D. In London.

3. How many brothers and sisters does Susan have?

A. She has two sisters and one brother.

B. She has two brothers but no sister.

C. She has two sisters but no brother.

D. She has two brothers and one sister.

4. What's Susan's favorite subject in school?

A. Chinese.                

B. Music.

C. English.                 

D. Math.

5. Which of the following is TRUE according to the passage?

A. Susan is from China.

B. Susan is in Shanghai with the whole family.

C. Susan likes going to the movies on weekends.

D. Susan speaks good Chinese.

题型:计算题

注水井可以无控制放压,特别是套管放压。

题型:计算题

九一八事变后,导致东北三省迅速沦陷的主要原因是                                             

A.敌我力量对比悬殊

B.东北守军战斗力低下

C.蒋介石采取的不抵抗政策

D.日军为侵华战争作了长期准备

题型:计算题

Word制表时,点击“表格”→“插入”→“表格”并点击,在对话框内输入()、选择是固定列宽还是根据窗口或内容调整表格,点击确定。

A.拼音

B.字母

C.表格行数和列数

D.汉字

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