四格表资料卡方检验的检验假设是
A.P1=P2B.P1≠P2C.π1=π2D.π1≠π2E.P=π
参考答案:C
解析:即H0
小儿败血症确诊的最主要依据是()
A.高热持续不退伴神萎
B.高热伴肝、脾肿大
C.高热伴周围血象中白细胞升高
D.血培养阳性
E.鲎试验
Will you please tell John to come to my office? . [ ]
A. Yes, I do
B. I'll be glad
C. Thank you
D. I'll be glad to