采用反相分配色谱法（）。
A.适于分离极性大的样品
B.适于分离极性小的样品
C.极性小的组分先流出色谱柱
D.极性小的组分后流出色谱柱
参考答案：B, D
根据句意及首字母提示完成句子。
1. I want to go to Mary's birthday p_______.
2. January is the first m_______ of the year.
3. Our school t_______ is in May.
4. —When is your birthday? —My d_______ of birth is March eleventh.
5. —What's your a_______ ? —Thirty.
6. Do you like music c_______ on CCTV?
7. W_______ do you have a School Day at your school?
下列有关钾通道开放剂的叙述，哪项是错误的（）
A.开放钾通道，使血管平滑肌细胞膜超极化
B.增加细胞内游离Ca2+水平
C.可使血糖升高
D.可致心率加快，肾素水平增加，水钠潴留
E.化学结构与氯塞嗪
