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 国家开放大学 / 流体力学

5.两段长直的棱柱形渠道,通过的流量相同(  )。

A.

底坡不同(),其他参数相同(,则


B.

底宽不同(),其他参数相同(,则


C.

粗糙系数不同( >),其他参数相同(,则


D.

边坡系数不同(),其他参数相同(,则


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