简述NGN提供的主要业务。

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问题:

简述NGN提供的主要业务。

考点:移动通信技术移动通信技术题库
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完形填空。
     There is a zoo in our city. My parents often take me there __1__ Sunday. I like animals. I have a lot of
__2__ animals in my room. In the zoo I can see tigers, elephants, monkeys, pandas, bears, snakes __3__
many other animals.
     I think the most interesting animal in the zoo is the __4__. I like watching them swim and jump. They
swim fast and they jump very __5__. They can play with a __6__. They can stand up on water! They are
very __7__ to people. If you __8__ into the water and __9__ swim, they may come up to __10__ you.
( )1. A. for    
( )2. A. toy    
( )3. A. or      
( )4. A. fish    
( )5. A. quickly  
( )6. A. ball    
( )7. A. dangerous
( )8. A. fall (跌, 落)
( )9. A. can't    
( )10. A. eat      
B. in
B. real    
B. but    
B. duck    
B. high    
B. box    
B. friendly
B. run    
B. can    
B. kill    
C. on      
C. small  
C. so      
C. panda  
C. low    
C. bike    
C. useful  
C. jump    
C. don't  
C. catch  
D. at          
D. big          
D. and          
D. dolphin (海豚)
D. long        
D. knife        
D. bad          
D. swim        
D. must        
D. help        
题型:问答题 简答题

在全冠修复时,不可能对牙龈造成危害的因素是()

A.牙体预备

B.取印模

C.轴面凸度

D.食物嵌塞

E.对颌牙充填式牙尖

题型:问答题 简答题

关于球结膜充血的描述,不正确的是()

A.来自结膜血管

B.越靠近穹隆部结膜充血越明显

C.推动时不随结膜移动

D.外观呈鲜红色

E.局部滴肾上腺素后,充血减轻

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盘梯踏步板的煨制采用()。

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