甲药品批准文号为国药准字J20080022，其中J表示（）
A.化学药品
B.中药
C.生物制品
D.进口药品
E.进口药品分包装
参考答案：E
投机可以增加市场流动性，因此市场上的投机者越多越好。 ( )
Roland Carlson, CFA, is a quantitative analyst in a regional securities firm. Because the p-value is exactly the same as the specified significance level, Carlson rejects a null hypothesis. The probability Carlson made a Type Ⅱ error is:（）
A. less than the probability Carlson made a Type Ⅰ error.
B. equal to the probability Carlson made a Type Ⅰ error.
C. greater than the probability Carlson made a Type Ⅰ error.
