平肝息风药中天麻所独具的药理作用是（）.
A．镇静
B．镇痛
C．解热
D．抗惊厥
E．抗癫痫
参考答案：E
解析：
天麻制剂用于治疗癫痫小发作、大发作。
Which of the following statements concerning arbitrage-free bond prices is FALSE（）
A. The riskier the bond, the greater is its credit spread.
B. It is not possible to strip coupons from U. S. Treasuries and resell them.
C. The determination of spot rates is usually done using risk-free securities.
在井下发现煤岩层挂红，水质发黄，可初步断定水源为（）或（）水，发现煤帮挂白，可初步断定水源为（）水。
