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分类: 专业基础知识(水利水电) 发布时间: 2023-11-03 00:16 浏览量: 1

A.6.67m/s,2.27m

B.v=7.67m/s,3.19m

C.v=8.67m/s,3.54m

D.v=7.67m/s,2.59m

正确答案是A