问题：
[单选题] 某给水系统,自潜水层由管井取水,输送至配水厂清水池。井群至配水厂间输水管水头损失计算,应按( )计算。
A、井群干扰时产水量
B、最高日最高时用水量
C、井群无干扰时产水量
D、最高日平均时用水量
参考答案：
D
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