铠装电缆的实际选用长度，应比敷设电缆巷道的设计长度增加（）%。
A、2
B、5
C、10
D、15
参考答案：B
地层
Assuming that the risk-free rate is 5 percent, the expected return on the market is 10 percent, and the stock's beta is 0.5, what is the value of a stock that paid a $ 0. 30 dividend last year, if dividends are expected to grow at a rate of 6 percent forever
A. $15.00. B. $16.63. C. $21.20.
