三个样本率作比较,,可认为()
A.各总体率不等或不全相等
B.各样本率不等或不全相等
C.各总体率均不相等
D.各样本率均不相等
E.以上都不对
参考答案:A
---What did Alice say?
---She said she me at eight o’clock tomorrow morning.
A.is calling
B.was calling
C.will call
D.would call
血清淀粉酶活性升高 ()
A.急性心肌梗死
B.肝硬化
C.原发性肝癌
D.急性胰腺炎
E.前列腺癌