夏普指数越大,下列叙述哪个是正确的
A.每单位风险下其报酬率较高。
B.每单位风险下其报酬率较低。
C.每单位期间其报酬率较高。
D.每单位期间其报酬率较低。
参考答案:A
饮用水的基本卫生要求不包括()。
A.净化消毒设施完善
B.感官性状良好
C.水量充足,取用方便
D.流行病学上安全
E.所含化学物质对人体无害
His complaint about our management was not without reasons.
A. could be rectified B. could be justifiedC. was modified D. could be enforced