单项选择题 减少存货，是应对现金收付风险的有效策略，以下哪条不宜？ A、加强促销，减少成品库存 B、加强供应链管理，做好流通成品、在制品管理 C、学习戴尔公司，降低库存 D、多多建大型仓库，摆放库存物品

多项选择题 High performance liquid chromatography-pre-column derivatization method Aflatoxin B1, B2, G1, G2 solid phase purification column purification to remove interference substances such as ___ to obtain a purification solution.

判断题 A distinct purpose is important in defining an organization. 正确 错误