A.大豆B.沙子C.鋼材D.鐵礦石
A.報(bào)價(jià)設(shè)計(jì)B.合同設(shè)計(jì)C.詳細(xì)設(shè)計(jì)D.生產(chǎn)設(shè)計(jì)
A.CCSB.BVC.DNVD.ABS