A.以應(yīng)收賬款交換鋼材B.以商業(yè)承兌匯票交換專利技術(shù)C.以預(yù)付賬款交換紙筆等辦公用品D.以準備持有至到期的債券投資交換廠房
A.21 B.23 C.19 D.18
A.2600 B.3150 C.1150 D.2150