問題詳情
19.水在管內流動，許多因素影響水頭損失，其中損失水頭與水的平均流速的關係爲：
(A)成正比
(B)平方成正比
(C)成反比
(D)平方成反比
(A)成正比
(B)平方成正比
(C)成反比
(D)平方成反比
參考答案
答案：B
難度：適中0.641892
統計：A(27),B(95),C(14),D(12),E(0)
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