什么叫焊剂?其作用是什么?

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什么叫焊剂?其作用是什么?

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完形填空。
     A French student went to London for his holiday. He thought,"I know  1  English. But I think people can
understand me."
    One day he went to a hotel and sat down at a  2 . He wanted to  3  a cup of tea and some eggs. Soon the
waiter came up to him and asked,"Can I help you?"
    "A cup of tea and..."He could not remember the  4  word for eggs. He looked  5  him, but nobody was
eating eggs. Then he saw  6  on the table next to him. There was a picture of  7  on its cover (封面). He  8  
the picture to the waiter."What is the English for this?"
    "A cock,"answered the waiter."What do you call a cock's wife?"he asked again."A hen.""And what do you
call a cock's children?""Chicks.""And what do you call chicks  9  they are born (出生)?" "Eggs."
    "Very well," said the French student happily. "Bring me two  10  and a cup of tea, please."And he sat down
with a smile on his face.
( )1. A. much       
( )2. A  table     
( )3. A. drink     
( )4. A. French     
( )5. A. at         
( )6. A. a story book
( )7. A. a cock     
( )8. A. read       
( )9. A. when       
( )10. A. hens     
B. a little     
B. door         
B. take         
B. Chinese     
B. for         
B. a picture book
B. a girl       
B. put         
B. before       
B. chicks       
C. more          
C. chair        
C. have          
C. En glish      
C. around                               
C. a history book
C. a child       
C. showed        
C. where        
C. eggs          
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关于僵硬的定义哪项是正确的()。

A.是一种由牵张反射高兴奋性所致的、以速度依赖的紧张性牵张反射增强伴腱反射异常为特征的运动障碍

B.是主动肌和拮抗肌张力同时增加使得各个方向的关节被动活动阻力均增加的现象

C.是一种以张力损害、持续的和扭曲的不自主运动为特征的肌肉运动亢进性障碍

D.肢体处于关节频繁的过度伸展而易于移位的现象

E.肌张力高于正常静息水平的现象

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数据输入时的意外差错或欺诈行为,数据传输中信息的丢失、重复或次序差异、被篡改等都可能导致贸易各方信息的差异。这体现了电子支付安全性需求中的()。

A.授权

B.数据完整性

C.不可重用性

D.交易信息的安全存储

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城乡居民养老保险最高缴费档次标准原则上不超过省()参加职工基本养老保险的年缴费额。

A.企业职工

B.灵活就业人员

C.机关事业单位人员

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公共福利是指( )。

A.社会要求提供的福利

B.法律规定必须提供的福利

C.员工要求提供的福利

D.组织根据自身的发展需要所提供的福利

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