就物资采购管理的目标而言,一般用“5T”来表述,即适当的时间、适当的数量、适当的质量、适当的价格、适当的供应商。
参考答案:错
His father is __________ engineer and he works __________ research.
A.an, on
B.an, with
C.the , on
D.a, with
F/TPSA比值是用于PSA值灰区的鉴别诊断,其值是()
A.2~5ng/ml
B.2~7ng/ml
C.3~10ng/ml
D.5~10ng/ml