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问题 填空题

铝的密度是2.7×103kg/m3，表示的物理含义是______，将铝块切去1/3，剩余部分的密度是______，合______g/cm3．

答案

铝的密度是2.7×103kg/m3，表示的物理含义是：1m3的铝质量为2.7×103kg．

将铝块切去1/3，质量变小，体积变小，但密度是不变的，仍是2.7×103kg/m3

1kg/m3=10-3g/cm3所以2.7×103kg/m3=2.7g/cm3．

故答案为：1m3的铝质量为2.7×103kg；2.7×103kg/m3；2.7．

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 Jim,                                             
    I'd like to tell you something more about our school  
sports meet. It was holding on Oct. 6th, which was a  
fine day. There was over 1,000 students and teachers  
attend it. Wang Lin, a student from my class won the  
100-meter race. He finish the race in 12.6 seconds  
and broke in the school record. The sports meet     
was really success. That was because we were       
all trying to do my best.                       
Although I was not one of the winner, I           
was proud of that we had done.                   
Looking forward to receiving your letter.             
Yours,                                                
Li Ping                                                		1._________           
2._________         
3._________         
4._________      
5._________        
6._________        
7._________        
8._________                                                  
9._________       
10._________     
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单项选择题 A1型题

下列关于车间有害物质检测中，最准确的是（）

A.全天一个样品监测

B.全天多个样品监测

C.部分时间多个样品监测

D.瞬时多个样品监测

E.瞬时一个样品监测
查看答案