A.降雨預(yù)報(bào)B.徑流預(yù)報(bào)C.天氣預(yù)報(bào)D.用水預(yù)報(bào)
A.作用B.效益C.下泄流量過程線D.防洪庫容應(yīng)用
A.極大值B.極小值C.最優(yōu)值D.合理值