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【单选题】
某组合仅包含A股票和B股票,其中,A股票期望收益率为25%,标准差为75%,B股票期望收益率为10%,标准差40%,若组合中A股票投资占比为40%,则组合的期望收益为( )。A.
54%
B.
61%
C.
19%
D.
16%
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举一反三
【单选题】The ratio of the height of a vessel’s rudder to its width is referred to as the（）.
A.
aspect ratio
B.
constriction ratio
C.
rudder ratio
D.
steering ratio
【简答题】A．investors B．developers C．designers D．stakeholders
【单选题】Which statement about stakeholders is BEST?
A.
Stakeholders wield considerable power.
B.
Stakeholders can potentially impact project development.
C.
Stakeholders are external to a company.
D.
By definition, clients are not stakeholders, they are customers.
【简答题】the ratio of channel width to channel length
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