某站的年径流量频率曲线的Cs>0,那么频率为50%的中水年的年径流量()多年平均年径流量。A、大于B、大于等于C、小于D、等于
某站的年径流量频率曲线的Cs>0,那么频率为50%的中水年的年径流量()多年平均年径流量。
- A、大于
- B、大于等于
- C、小于
- D、等于
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