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问题 单项选择题

依据《安全生产许可证条例》（国务院2004年第397号）的规定，国家对建筑施工企业实施（）制度

A、安全生产许可证

B、定期安全检查

C、施工许可证

D、行业监督

答案

参考答案：A

单项选择题

Which of the following statements regarding portfolio theory is least likely correct()

A. The covariance between the returns on a security and those of the overall market, divided by the variance of the market returns, is a measure of the security’s systematic risk.

B. All securities and portfolios plot on the SML when their prices are in equilibrium.

C. A security that lies on the CML must be priced at its equilibrium level.
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问答题

试分析“挤出效应”大小与IS曲线斜率的关系及其经济学含义。
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