某一指标的均值为3,方差为4,有一观测值为5,则标准化后其值为()
A.1
B.0.5
C.-1
参考答案:A
I have searched _____ for the book but couldn't find it. [ ]
A. accurately
B. technically
C. thoroughly
D. firmly
在深度22.0m处取得土样,测得先期固结压力为350kPa,地下水位距地表4.0m,水位以上土的密度为1.85g/cm3,水位以下土的密度为1.90g/cm3。该土样的超固结比(OCR)最接近( )数值。
A.<0
B.1.37
C.1.48
D.1.63