已知干燃气的容积成分为:=3.9%(按C3H6计算),=1.9%,=0.4%,yCO

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问题:

已知干燃气的容积成分为:=3.9%(按C3H6计算),=1.9%,=0.4%,y

CO=6.3%,=54.4%,=31.5%,=1.6%。假定含湿量d=0.002

kg/m3(干燃气),则干燃气的平均密度为()kg/m3

A.0.368

B.0.492

C.0.406

D.0.503

考点:注册公用设备工程师动力专业案例勘察设计注册公用设备工程师动力专业案例6
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肝脏每天分泌胆汁量约

A.1000~1500ml
B.1500~2000ml
C.600~1000ml
D.100~300ml
E.300~600ml

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阅读理解。

     Mike is an American school boy. He is now in Beijing with his parents. He doesn't know Chinese, but he

is trying (努力) to study and speak it. He often tries to speak Chinese to his Chinese friends. Sometimes

they don't understand (理解) him, because he can't speak Chinese well. 

      One Saturday morning, Mike goes out. He is on his way to the park. He is going there to see a flower

show (展览). But he doesn't know how to get there. He asks a Chinese boy. The boy can't understand him.

Then he takes out a pen and some paper. He draws flowers on it, gives the picture to the boy and says

something about it. The boy smiles and then shows (指给) Mike the way to the park. 

1. Where does Mike live now? He lives in _____.      [ ]

A. America  

B. England   

C. China    

2. He can speak _____ Chinese.     [ ]

A. much    

B. a little   

C. little      

3. He likes _____ Chinese with his _____.      [ ]

A. speak, parents  

B. speaking, friends

C. speaking, teachers

4. Where is he going?                [ ]

A. To a new school.  

B. To see some flowers. 

C. To a park.

5. How does he ask the way to the flower show?     [ ]

A. He asks the way in Chinese.

B. He asks the way with a sigh (标志).    

C. He draws a picture to ask the way.

题型:单项选择题

哪种药物试验治疗可用来鉴别肝外阻塞性黄疽与非梗阻性胆汁淤积性黄疸

A.安体舒通

B.心得安

C.酚妥拉明

D.泼尼松

E.多巴胺

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政府国内债务表现为()和()。

题型:单项选择题

蓝细菌 cyanobacteria

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