频次奖励主要用于消费可以进行储备的服务产品的销售激励。( )
参考答案：错
解析： 频次奖励主要用于消费不可以进行储备的服务产品的销售激励。
Joshua Douglas, CFA, is interested in the relationship between the stock prices of two companies, Sonata Inc. and Prius Inc. After downloading a time series of stock prices for each company, Douglas concludes that Sonata Inc. has a variance equal to 25.0 percent and Prius has a variance equal to 20.0 percent. If the covariance between the two stocks is -0.10, the correlation coefficient is:（）
A. negative, and indicates that a 1.0% increase in the price of Sonata would be accompanied by a 2.0% decrease in the price of Prius.
B. negative, and indicates that a 10.0% increase in the price of Sonata would be accompanied by a 4.5% decrease in the price of Prius.
C. positive, and indicates that a 1.0% increase in the price of Sonata would be accompanied by a 2.0% increase in the price of Prius.
串联电路两端的总电压等于各个电阻两端的电压之和。( )
