下列哪种偏倚不属于选择偏倚（）
A.住院偏倚
B.存活病例偏倚
C.转诊偏倚
D.测量偏倚
E.无应答偏倚
参考答案：D
Liu Xiang is ________ Yao Ming.
A．as a famous athlete as
B．as famous an athlete as
C．so a famous athlete as
D．as famous an athlete so
沥青路面用作基层的级配碎(砾)石材料，为防止冻胀和湿软，应控制( )颗粒的含量和塑性指数。
A．小于0.6B．不大于0.5C．小于0.5D．不大于0.6
