A.商品流轉(zhuǎn)次數(shù)時(shí)間序列B.畢業(yè)生人數(shù)時(shí)間序列C.黃金儲(chǔ)備量時(shí)間序列D.庫存量時(shí)間序列E.總成本時(shí)間序列