A.施工方案的論證與技術(shù)經(jīng)濟(jì)比較 B.施工方案的論證 C.技術(shù)經(jīng)濟(jì)比較 D.經(jīng)濟(jì)評(píng)價(jià)
A.50~20 B.100~50 C.200~100 D.500~200
A.2 B.3 C.4 D.5