A.{-10%,+10%} B.{-20%,+20%} C.{-30%,+30%} D.{-10%,+20%}
A.項(xiàng)目評(píng)價(jià) B.項(xiàng)目預(yù)評(píng)估 C.初步可行性研究 D.最終可行性研究
A.0.2%~l% B.1%~3% C.0.25%~1.5% D.2%~5%