Q: What kind of work environment do the people want?
A fun environment.
B. A serious environment.
C. A productive environment.
D. A quiet environment.
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Q: What is the type of job that would keep the man interested?
An easy job.
B. A challenging job.
C. A creative job.
D. A high-paid job.
有一堰型，堰厚为3.5米，堰上水头为0.3米，则该堰流属于（ ）。
A. 薄壁堰流
B. 实用堰流
C. 宽顶堰流
D. 明渠堰流
下述堰的分类哪个正确（）
A. δ/H>0.67薄壁堰
B. 0.67<δ/H<10.0宽顶堰
C. 0.67<δ/H≤2.5实用堰
D. δ/H>2.5薄壁堰
有一堰型，堰厚为3米，堰上水头为0.5米，则该堰流属于（ ）。
A. 薄壁堰流
B. 实用堰流
C. 宽顶堰流
D. 明渠堰流
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