收益与风验的本质关系可以表述为如下公式：预期收益率=无风险利率-风险补偿。()
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股息率的变化一般与公司经营状况没有关系，而主要是随着市场上其他证券价格或银行存款利率的变化作调整。()
A. 正确
B. 错误
外资股是指在境外上市的外资股。()
A. 正确
B. 错误
教育法比教育政策更具灵活性。 ()
A. 正确
B. 错误
According to the information given in the passage, which of the following would be most likely to help a nation meet the reduction targets of the Kyoto Protocol？
A power plant switches its fuel source from bituminous to anthracite coal, thereby reducing the amount of sulfur dioxide that the plant releases into the air.
B. An aluminum processing plant alters the mix of the chemicals used in its smelting process so that the amount of nitrous disulfide emitted by the plant is increased and the amount of sulfur hexafluoride is decreased.
C. A petrochemical plant that produces plastics adjusts its manufacturing process so that the ratio of HFCs to PFCs emitted by the plant is altered from 1:12 to 1:8.
D. A metropolitan area switches its power source from a plant that burns coal to one that burns natural gas, which emits significantly less carbon dioxide per kilowatt of power generated than coal, although leaks in the natural gas pipeline have increased th
E. To reduce smog, a state mandates that all state employees on state business must drive electric vehicles instead of gasoline- powered vehicles; the energy used by these electric cars comes from coal- and oil-burning power plants that emit carbon dioxide.
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