市盈率
参考答案：
解析：市盈率是指股票市场价格与其每股盈利的比率。其计算公式为：市盈率=股票市价/每股收益。
All the fellow workers were shocked by news that Bob was appointed director of the factory.
A．a; the
B．the; /
C．the; the
D．/; /
肛门内外只有一个开口的是（）
A.单纯性肛瘘
B.复杂性肛瘘
C.低位肛肛瘘
D.外盲瘘
E.高位肛瘘
