问题 单项选择题

各种绝缘材料的()的各种指标是抗张、抗压、抗弯、抗剪、抗撕、抗冲击等各种强度指标。

A、接绝缘电阻

B、击穿强度

C、机械强度

D、耐热性

答案

参考答案:C

改错题
此题要求改正所给短文中的错误。对标有题号的每一行作出判断:如无错误,在该行右边横线上画
一个勾(√);如有错误(每行只有一个错误),则按下列情况改正:
此行多一个词:把多余的词用斜线划掉,在该行右边横线上写出该词,并也用斜线划掉。
此行缺一个词:在缺词处加一个漏字符号(∧),在该行右边横线上写出该加的词。
此行错一个词:在错的词下画一横线,在该行右边横线上写出改正后的词。
注意:原行没有错的不要改。
Dear Bob,                                                
    Hello. I learn about you from my English teacher,       
Miss Wang. I'd like to your pen friend, and get to    
know more about your country.                            
    First, let me tell you something more about myself.      
My name is Li Hua. I live in Beijing, where is the      
capital of China. I go in Hongqi Middle School. We      
study quite a few subject, such as math, Chinese,      
English and physics. I use to play ping-pong a lot     
in my spare time, but now I am interesting in football.  
Do you play any ball games? What your favourite        
sport? I look forward to hear from you soon.                   
Yours,                                 
Li Hua                                                 

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2._________  

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5._________                                                 
6._________    
7._________      
8._________  
9._________    
10._________   


单项选择题