Which of the following statement best described the efficient frontier It is the set of portfolios that has :
A. the minimum risk for every level of return.
B. the maximum return for each level of beta based on the capital asset pricing model.
C. the maximum excess rate of return for every given level of risk.
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An investor holds a portfolio of two stocks, ABC Inc. , and XYZ Corp, and is considering adding the stock of New Company to her portfolio. For diversification purposes, the most important factor for her considers where making this decision is:
A. new Company"s expected return relative to the of ABC and XYZ.
B. the average covariance of New Company"s returns with the returns of ABC and XYZ.
C. the total variance of New Company"s returns relative to the variance of returns for ABC and XYZ.
沿江高铁某段由西向东设置了五个站点，已知：(1)扶夷站在灏韵站之东、胡瑶站之西，并与胡瑶站相邻；(2)韮上站与银岭站相邻。 假如灏韵站位于最西面，则这五个站点可能的排列顺序有多少种
A. 3种。
B. 4种。
C. 5种。
D. 6种。
E. 8种。
As time goes on, we expect the SML:
A. to change slope to reflect different investment opportunities in the markets.
B. to change level to reflect changes in risk aversion among investors.
C. to change level and slope depending on the economic conditions prevailing.
一种调料的原材料由下列5种物质组成：F、C、H、J、K。配方可以是其中两种或两种以上的原材料混合在一起，但必须遵守下列规则：(1)有F必有H，且1份F必有2份H。(2)有G必有J，且G、J等量。(3)H和J不共用。(4)J和K不共用。(5)有K必然得到K的量比其他所有的量都大。 以下哪一个调料配方可以通过去掉一种原材料的一部分或全部后使其合乎规则
A. 1份F，1份G，1份H，4份K。
B. 1份F，2份H，1份J，4份K。
C. 1份F，1份G，1份J，1份K。
D. 2份F，2份H，1份J，2份K。
E. 1份F，2份C，3份J。
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