下列关于金刚石、石墨、C60、CO2的说法不正确的是( ) A.大气层中CO2过

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问题:

下列关于金刚石、石墨、C60、CO2的说法不正确的是(  )

A.大气层中CO2过多会造成“温室效应”

B.石墨质软,可作铅笔芯

C.C60是一种新型的化合物

D.金刚石硬度大,可切割大理石

考点:单质和化合物二氧化碳对环境的影响碳的性质
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完形填空。
     Someone says, "Time is money." But I think time is   1   important than money. Why?   2   when money
is spent, we can get   3   back. However, when time is   4  , it will never return. That is why we mustn't
waste time. It goes without saying that the   5   is usually limited (有限的). Even a second is very important.
We should make full use   6   our time to do   7   useful. But it is a pity that there are a lot of people who
don't know the importance of time. They spent their limited time smoking, drinking and playing. They don't
know that wasting time means wasting parts of their   8  . In a word we should save time. We shouldn't leave
today's   9   for tomorrow. Remember we have no time to  10 .
( )1. A. much     
( )2. A. Because  
( )3. A. their    
( )4. A. cost     
( )5. A. money    
( )6. A. for      
( )7. A. nothing  
( )8. A. time     
( )9. A. newspaper
( )10. A. lose    
B. less     
B. For      
B. them     
B. bought   
B. time     
B. of       
B. something    
B. food     
B. dinner   
B. save     
C. much less 
C. As        
C. it        
C. gone      
C. day       
C. to        
C. anything     
C. money     
C. work      
C. spend     
D. much more      
D. And            
D. its            
D. finished       
D. food           
D. into           
D. everything                         
D. life           
D. TV             
D. able           
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病历摘要:熟悉药品管理法的内容及有关规定,掌握医疗机构药事管理概念及其处方、制剂、药物临床应用的主要规范性内容。

药物的临床试验机构必须执行()

A.GAP

B.GLP

C.GCP

D.GMP

E.GSP

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冻结性冷伤由10°C以下,冰点以上的低温加以潮湿条件造成的人体损伤。()

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定期清洗旋转滤网目的是()旋转滤网启动方法有()种,正常工况下旋转滤网每班应清洗()次,要求采用()方法启动。

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纸面石膏板的性能和适用范围?

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