浙贝母的商品药材名称是（）
A.炉贝
B.平贝
C.大贝
D.青贝
E.松贝
参考答案：C
解析：大贝是浙贝母的商品规格。
If the threshold return is higher than the risk -free rate, what will be the relationship between Roy's safety -first ratio (SF) and Sharpe's ratio（）
A. The SF ratio will be lower.
B. The SF ratio will be higher.
C. They will be the same.
主筋的脏腑是（）。
A.心
B.肝
C.脾
D.肺
E.肾
