阵挛性发作多见于()
A.中年人
B.老年人
C.青壮年
D.儿童期
E.婴幼儿
参考答案:E
— I'm going to San Francisco for a couple of days.
— ____ . I wish I could get away for a while. [ ]
A. It doesn't matter
B. Forget it
C. I really envy you
D. I can't agree more
药物分子通过聚合物的扩散,可用FiC.k第一定律来描述:J=DDC/Dx其中J表示为()
A.溶质浓度差
B.渗透量
C.溶质流量
D.扩散量