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什么是内应力？哪些加工过程可以产生内应力？

答案

参考答案：内应力是指当外部载荷除去后仍然存在于工件内部的应力。工件的毛坯制造、切削加工和热处理过程都能产生内应力。

完形填空
完形填空。
     There __1__ a nice girl in our middle school. She is in __2__. She is __3__years old.  She is not tall
and she is not short. She has a__4__ face like an apple. Her eyes are big, __5__ her mouth is small. Her
hair is short and  black.  She likes red. She is often __6__ red clothes.   Her  parents  are __7__doctors.
Her brother is Japanese teacher.  She loves her family and ___8__love her,  too.  She  likes little animals.
She has a little dog in her home. __9__ name is Xiaoxiao. __10__is she?
( )1. A. is     
( )2. A. row five
( )3. A. forty   
( )4. A. round   
( )5. A. with   
( )6. A. on     
( )7. A. a      
( )8. A. they   
( )9. A. It     
( )10.A. Who      		B. are     
B. five row
B. for     
B. big     
B. or     
B. in     
B. an     
B. them   
B. Its     
B. Who's 		C. has       
C. Row Five  
C. four     
C. small     
C. but       
C. under     
C. the      
C. their     
C. She       
C. Whose   		D. have          
D. Five Row      
D. fourteen      
D. long          
D. and            
D. put on        
D. /              
D. theirs        
D. He             
D. How          
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单项选择题

下列关于外科疾病总的发病机理的叙述，错误的是（）

A.气血凝滞

B.经络阻塞

C.营气不从

D.脏腑失和

E.热毒火毒
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