用差压法测量流量，若介质是液体或蒸气时，应在导管系统最高点安装排气阀。

发布时间：2018-05-23 11:22 │ 来源：www.tikuol.com

题型：判断题

问题：

题型：判断题

完形填空。
Once upon a time, a man punished his 5-year-old daughter for 1 the family's only roll of expensive gold wrapping paper. Money was tight then. The child decorated a shoebox with the gold paper and put it 2 the Christmas tree. The next morning the little girl, filled with 3 brought the gift box to her father and said, "This is for you, Daddy! " 4 he opened the box, the father felt sorry for his earlier action. But when he opened it, he found it was 5 and again his anger broke out. "Don't you know, young lady," he said angrily, " when you give someone a present there should be something inside the package ! " The little girl looked 6 at him with tears rolling from her eyes and said," Daddy, it' s not empty. I blew 7 into it until it was all full. " Her father's face turned red. He fell on his 8 and put his arms around his lovely little girl. He begged her to forgive him for his unnecessary anger. An accident 9 the life of the child only a short time later. It is said that the father 10 that little gold box by his bed for all the years of his life. Whenever he was discouraged or faced difficult problems he would open the box , take out an imaginary kiss. There is no more valuable thing anyone could hold.
( )1. A. using up ( )2. A. above ( )3. A. interest ( )4. A. After ( )5. A. empty ( )6. A. happily ( )7. A. love ( )8. A. legs ( )9. A. took ( )10. A. put	B. selling B. under B. tears B. As soon as B. a pair of shoes B. angrily B. luck B. feet B. left B. kept	C. losing C. on C. excitement C. If C. full C. up C. kisses C. back C. brought C. laid	D. stealing D. in D. anger D. As D. a roll of gold paper D. down D. wishes D. knees D. carried D. placed

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易化扩散需要载体参与，因此易化扩散也存在对底物的（）、（）和（）。

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(31)到(35)题使用如下数据表。
“班级”表：
班级号班级名
11 信息200801班
12 信息200802班
21 计算机200801班
22 计算机200802班
“教师”表：
教师编号姓名班级号工资职称电话
T11 李清 11 1500.00 讲师 65854587
T22 王晓黎 12 2200.00 教授 63525876
T33 欧倩倩 11 1600.00 讲师 65548478
T44 刘宏 21 1200.00 助教 63252585
T55 赵虎 22 2100.00 教授 68989854
T66 胡丽丽 22 1400.00 讲师 65847952
T77 刘纷 12 1100.00 助教 65847931

若有如下SQL语句：
SELECT姓名,MIN(工资)FROM教师GROUP BY班级号
执行该语句后，查询结果共显示( )条记录。

A．0

B．1

C．4

D．7

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日本主张按大陆架的自然分界线划分东海经济专属区

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循环经济遵循（）原则

A.减量化

B.再使用

C.再回收

D.再循环

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