问题
单项选择题
水流通过管渠、设备和构筑物等所引起的能量消耗，叫（）。
A.水的阻力
B.压差
C.管网平差
D.水头损失
答案
参考答案：D
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水流通过管渠、设备和构筑物等所引起的能量消耗，叫（）。
A.水的阻力
B.压差
C.管网平差
D.水头损失
参考答案：D
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