A.交易折扣 B.舊貨折扣 C.分步折扣 D.數(shù)量折扣
A.不一定相一致 B.相一致 C.相反變動(dòng) D.無(wú)任何關(guān)系
A.0.15% B.0.3% C.1.5% D.3%