衰退期的货源保障呈现（）特点。A.停止货源采购 B.提供促销物资

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问题单项选择题

衰退期的货源保障呈现（）特点。

A.停止货源采购

B.提供促销物资

C.销量平稳下降

D.以消化库存为目标

答案

参考答案：D

选择题

The manager urged older staff ____ early retirement and new staff _____ more time for work.[ ]

A. take up; to set aside

B. took up; set aside

C. would take up; to lay aside

C. must take up; lay aside

单项选择题

X=30，X2=190，5.某组资料共5例，则均数和标准差分别是（）。

A.6和1.29

B.6.33和2.5

C.38和6.78

D.6和1.58

E6和2.5