马柯维茨提出的均值一方差模型描绘出了资产组合选择的最基本、最完整的框架，是目前投资理论和投资实践的主流方法，其理论步骤包括()。 建立均值模型 确定投资者的一簇无差异曲线 把投资者的偏好表现出来 4．均值方差曲线与无差异曲线之间的相切点，就是投资者的最优资产组合
A. 1-2-3-4
B. 2-1-3-4
C. 1-3-2-4
D. 3-2-1-4
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股票发行采用包销方式的，应当在发行公告中披露发行失败后的处理措施。股票发行失败后，主承销商应当协助发行人按照发行价并加算银行同期存款利息返还股票认购人。()
A. 正确
B. 错误
买卖信贷资产支持证券时，下列()不用缴纳营业税。
A. 受托机构从其受托管理的信贷资产信托项目中取得的贷款利息收入
B. 贷款服务机构取得的服务费收入
C. 受托机构取得的信托报酬
D. 非金融机构投资者买卖信贷资产支持证券取得的差价收入
A．The local people sell the bricks for a living.B．The local people are short of cultur
A. The local people sell the bricks for a living.
B. The local people are short of culture knowledge.
C. The local people need bricks and stones to build houses.
D. The local people does not realize the seriousness of the problem.
A．They should be strict with their childrenB．They should not set limits for their chil
A. They should be strict with their children
B. They should not set limits for their children
C. They should give more power to their children
D. They should not be so anxious about their children
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