问题 填空题

影响积屑瘤形成的主要因素有:工件的力学性能、()和冷却润滑条件。

答案

参考答案:切削速度

完形填空
完形填空。
     Nancy's hobby is collecting sharpeners. She    1   a lot of time on it after school. She has collected 
   2   one hundred sharpeners from different countries. They are all different    3    color and size.
     Nancy likes sharpeners with animal and birds on them. In this way, she learns the names of many
animals and birds. She also    4    books on animals and birds from her school library. She learns    5    
about them from books.
     Sometimes Nancy has many sharpeners of the same kind. She gives them    6    her friends. Then
they give her other different sharpeners in return (作为回报). 
     Nancy has many pen pals in many    7  . She sends them sharpeners of her country. In return, they
send her sharpeners of their countries. Nancy's father also gives her sharpeners. He brings    8   home
from his friend for her.
     Many of Nancy's friends collect    9    things. Some collect coins and others collect matchboxes or
stamps. But all of them say that Nancy's collection is   10   of all.
( )1.A. uses         
( )2.A. more than  
( )3.A. on           
( )4.A. writes       
( )5.A. a little     
( )6.A. for          
( )7.A. schools      
( )8.A. they       
( )9.A. other             
( )10.A. interesting
B. pays            
B. most            
B. in              
B. buys            
B. a lot           
B. to              
B. classes         
B. their           
B. another                 
B. more interesting   
C. spends                   
C. many                     
C. from                     
C. collects                  
C. a few                     
C. with                      
C. countries                 
C. theirs                    
C. others                    
C. the most interesting    
D. takes                
D. much                
D. with                
D. borrows             
D. a bit               
D. on                              
D. cities              
D. them                
D. the other           
D. less interesting 
单项选择题