《没收走私汽车、摩托车证明书》的证件打孔位置在左下角。
参考答案:错
下列物质中属于纯净物的是( )
A.空气
B.稀盐酸
C.矿泉水
D.二氧化氮
A portfolio has a return of 14.2 percent and a Sharpe's measure of 3.52. If the risk - free rate is 4.7 percent, what is the standard deviation of returns()
A. 2.6%.
B.3.9%.
C.2.7%.