普萘洛尔属于A、钾通普萘洛尔属于（）
A、钾通道阻滞药
B、钙通道阻滞药
C、膜稳定药
D、β受体拮抗药
E、Ia类膜稳定药道阻滞药
参考答案：D
Assume that the expected dividend growth rate (g) for a firm decreased from 5% to zero. Further, assume that the firm's cost of equity (k) and dividend payout ratio will maintain their historic levels. The firm's P/E ratio will most likely:（）
A. become undefined.
B. increase.
C. decrease.
杂志按出版期划分为（）等。（周刊，旬刊，半月刊，双月刊，季刊，半年刊等）
A、旬刊
B、半月刊
C、月刊
D、半年刊
