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【单选题】
某排水区域的雨水管线布置如下图,雨水在各管道内流行时间分别为 T 1-2 =6min, T 2-3 =4min, T 5-3 =11min, T 6-3 =10min,请问在计算 3-4 的设计流量时采用的集水时间为( )。
A.
16min
B.
9min
C.
18min
D.
17min
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【单选题】Why did nobody care about the Turkish astronomer’s discovery at first?( )
A.
Because his discovery was not true.
B.
Because he was in Turkish attire.
C.
Because he was dressed with impressive style and elegance.
查看完整题目与答案
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A.
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B.
Because he was in Turkish attire.
C.
Because he was dressed with impressive style and elegance.
查看完整题目与答案