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【多选题】
按照茨理论的假设和结论，以下说法正确的有 （ ）A.
市场上的投资者都是理性的
B.
市场上的投资者是风险中性的
C.
存在一个可以用均值和方差表示自己投资效用的均方效用函数
D.
无差异曲线与资产的有效边界线的切点就是投资者的最佳投资组合
E.
理性投资者可以获得自己所期望的最优资产组合
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举一反三
【单选题】Both parties were highly _______ with the results of the talks .
A.
satisfied
B.
satisfy
C.
being satisfied
【单选题】By writing out a contract and having both parties sign the contract you are () both parties involvled.
A.
protecting
B.
avoiding
C.
offending
D.
harming
【单选题】We both enjoy ______ to ______. [ ]
A.
going, partys
B.
going, parties
C.
to go, parties
【单选题】In the service of WhipCar, in order to guarantee the reliability of both parties the most indispensable step is to______.
A.
ensure the authenticity of the identification of both parties
B.
make both parties sign a contract made by car-sharing firms
C.
ask for the detailed information of both parties in rental
D.
make sure that both parties are satisfied with each other
【简答题】金银首饰与其他产品组成成套消费品销售的，应按（ ）征收消费税。
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