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某水源地面积A=20km2,潜水层平均给水度μ为0.1,其年侧向入流量为1×106m3,年侧向出流量为0.8×106m3,年垂直补给量为0.5×106m3,年内地下水位允许变幅△h=6m,则计算区的允许开采量应为( )106m3

单选题
2021-07-17 23:02
A、11.3
B、12.7
C、12.3
D、11.7
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正确答案
B

试题解析

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