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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: 0

A.4.7,0.5,-29.6

B.14.7,0,-19.6

C.24.7,1.5,-39.6

D.34.7,2.5,-9.6

正确答案是B