铝合金轮辋为什么会腐蚀?如何预防?

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问题:

铝合金轮辋为什么会腐蚀?如何预防?

考点:汽车维修业务知识竞赛汽车知识竞赛汽车知识竞赛题库
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器械预清洁首要的步骤是

A.冲洗

B.化学浸泡

C.擦拭

D.干燥

E.上泊

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 ____ in my life impressed me so deeply as  my first visit to the Palace Museum.  [ ]

A. Anything                            

B. Nothing  

C. Everything                          

D. Something

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改错。此题要求你对一段文章改错。先对每一行作出判断是对还是错,如果是对的在该行右边的
横线上划一勾(√);如果有错误(每行不会多于一个错误),则按情况改错如下:
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:在该缺词处加漏字符号(∧)在该行右边横线上写出该加词。
此行错一个词:在错的词下划一横线,在该行右边横线上写出改正后的词。
I will never forget my first job. It was three years before       
that when I finished entrance examination. Since                 
I had nothing in do that summer, I decided to find              
 the job and taste the joy of independence (独立). I                
worked eight hour a day, six days a week. The work                
was neither difficult nor heavy and I got well with               
everyone. I did very good until I left. I was                     
very happy because I learn a lot from the work.                   
The most excited thing was when I began                           
to understand that my parents had done for me.                  
1._______     
2._______           
3._______          
4._______         
5._______              
6._______                                               
7. _______       
8._______          
9._______          
10._______        
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收缩压与舒张压之差称为()

A.收缩压

B.舒张压

C.脉压

D.体循环平均充盈压

题型:问答题 简答题

老子认为()是最高的哲学范畴。

A、道

B、儒

C、佛

D、礼

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