电子巡更记录或巡逻签到记录至少保存()以上。
A、半年
B、一年
C、两年
D、三年
参考答案:B
加味二妙散主治之痿病主要见下列那些症状()
A.四肢痿软、身体困重
B.发热、胸脘痞闷
C.食少纳呆、腹胀便溏、眩晕耳鸣
D.面浮不华、气短、神疲乏力、小便短赤
E.舌红体大苔黄腻,脉细数而濡
You are looking at two assets, A and B. The expected return on A is 15%, and the expected return on B is 17% , while the standard deviation of A is 20%, and the standard deviation of B is 18%. The two are correlated at 45%. What is the standard deviation of a portfolio made up of 40% A and the rest in B
A.
B.
C.