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问题 问答题

什么是活塞泵？按其作用原理可分为几类？

答案

参考答案：（1）活塞泵是一种以电力或蒸汽直接驱动为动力的容积式输液设备

（2）按其作用原理可分为单作用泵和双作用泵两类

改错题
短文改错。
     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：每行只有一个错
误，请按下列情况改正：
     该行多一个词：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。
     该行缺一个词：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。
     该行错一个词：在错的词下划一横线，在该行右边横线上写出改正后的词。
Yesterday I went to buy a gift for Father because her birthday    
was coming. That I bought for him was a book about how to        
keep health. The subway train taking me home was crowded,      
and I was lucky to get a seat. I sat there quietly imagining Father’s  
smiling, satisfied and happy face when he received gift. The          
train stopped at a station and an old lady with two large suitcase     
got on. Seeing her so tired, I offered my seat to her, though I feel    
tired myself. The old lady thanked to me and I smiled back at her.      
Maybe that was another gift giving to Father. I also realized that        
the journey would be sweet if you made it better for others!        		1. _____
2. _____
3. _____
4. _____
5. _____
6. _____
7. _____
8. _____
9. _____
10. _____
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单项选择题

世界上第一职业兴趣测验量表的编制者是( )

A．比奈

B．卡特尔

C．斯特朗

D．詹姆斯·沃克
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