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【单选题】
现有两个投资项目甲和乙,已知甲、乙方案的期望值分别是 10%、25%,标准差分别是20%、49%,那么 ( ) 。A.
乙项目的离散系数大于甲项目
B.
甲项目的风险程度小于乙项目的风险程度
C.
乙项目的离散系数小于甲项目
D.
甲项目的风险程度等于乙项目的风险程度
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A.
not only; but also
B.
both; and
C.
either; or
D.
neither; nor
【单选题】( )—What do you think of your English teacher?
A.
like him very much. He is ________ handsome ________ hard－working.
B.
Either; or
C.
neither; nor
D.
Not; or
E.
not only; but also
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A.
统一指挥原则
B.
专业化分工与协作原则
C.
管理层次原则
D.
管理幅度原则
E.
职、权、责相结合原则
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