β系数作为衡量系统风险的指标,其与收益水平负相关。( )
参考答案:错
解析: 资本资产定价模型表明:β系数作为衡量系统风险的指标,其与收益水平是正相关的,即风险越大,收益越高。
— Mum, may I have some cakes?
— Sorry, there's _____ left in the box. I'll go and buy some for you tonight. [ ]
A. nothing
B. no one
C. no
D. none
饮证、饮犯胸肺型喘咳痰涎壅盛,应急攻其标、以挫其邪势者,方宜
A.甘遂半夏汤B.己椒苈黄丸C.十枣汤D.葶苈大枣泻肺汤E.木防己汤