A.10%B.15%C.20%D.25%
A.用水預(yù)報B.氣象預(yù)報C.洪水預(yù)報D.水文氣象預(yù)報
A.降雨預(yù)報B.徑流預(yù)報C.天氣預(yù)報D.用水預(yù)報