A.電網(wǎng)所在地區(qū)汛期天氣情況預(yù)測 B.重點(diǎn)水電廠汛期來水預(yù)測 C.重點(diǎn)水電廠汛期水庫運(yùn)用計(jì)劃 D.直調(diào)水電廠水庫洪水調(diào)度方案
A.一次預(yù)報(bào)的誤差小于許可誤差時(shí),為合格預(yù)報(bào) B.合格預(yù)報(bào)次數(shù)與預(yù)報(bào)總次數(shù)之比的百分?jǐn)?shù)為合格率,表示多次預(yù)報(bào)總體的精度水平 C.預(yù)報(bào)項(xiàng)目的精度按合格率或確定性系數(shù)的大小分為3個(gè)等級(jí)
A.預(yù)報(bào)方案精度等級(jí)評(píng)定 B.作業(yè)預(yù)報(bào)的精度等級(jí)評(píng)定 C.預(yù)報(bào)時(shí)效等級(jí)評(píng)定等 D.洪水三要素預(yù)報(bào)統(tǒng)計(jì)