试题与答案

空分精馏塔下塔底部到顶部温度变化规律是（）。A.逐渐升高 B.逐渐降低 C.先升高后

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题型：单项选择题

题目：

空分精馏塔下塔底部到顶部温度变化规律是（）。

A.逐渐升高

B.逐渐降低

C.先升高后降低

D.先降低后升高

答案：

参考答案：B

考点：工程与技术科学空分技术空分技术题库
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题型：阅读理解
阅读下列短文，从各题A、B、C、D中选出能回答所提问题或完成所给句子的最佳答案。
                            Welcome to the zoo
Opening time:                                           Price:
From Monday to Friday                            Adults: ￥20
8:30 a.m.—5:30 p. m.                               Children: ￥10
On Saturday＆Sunday
8:30a.m.—6:00 p.m.
Location: Chongqing Street, Laoshan District (区), Qingdao City
1. The zoo opens _____ a week.
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    B. five days        
    C. six days    
    D. seven days
2. On Tuesday, the zoo closes at _____.
    A. 5:30 p.m.      
    B. 6:00 p.m.      
    C. 6:30 a.m.  
    D. 8:30 a.m.
3. On Wednesday, the zoo is open for_____.
    A. 8 hours          
    B. 8.5 hours        
    C. 9 hours    
    D. 9.5 hours
4. The zoo is in the city of _____.
    A. Qingdao    
    B. Shandong        
    C. Laoshan  
    D. Chongqing  
5. Beibei is 11 years old, and this Sunday she wants to visit the zoo with her parents. How much should
    they pay for the tickets?
    A.￥20.    
    B.￥30.    
    C.￥40.    
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