血友病可因缺乏哪个因子导致
A.因子ⅨB.因子Ⅲ(TF)C.因子ⅫD.因子ⅧE.因子Ⅳ
参考答案:D
解析:缺乏因子Ⅷ可导致血友病。
—I really apologize for not being able to join in your birthday party.
—_______. We'll get together later.[ ]
A. Go ahead
B. Not to worry
C. That's right
D. Don't mention it
完全随机设计的单因素方差分析中,则统计推论是()
A.各总体均数都不相等
B.各总体均数不全相等
C.各样本均数都不相等
D.各总体均数相等
E.各总体方差不全相等