成分输血
参考答案:成分输血:将全血中各种有效成分用物理方法分离成高纯度、高浓度的制品,根据病人的具体情况,选择输用。这种更有效、更合理的输血方法,称成分输血。
自耦变压器一次和二次之间()电的联系,()磁的联系。
A.有,有
B.有,没有
C.没有,有
D.没有,没有
根据提示完成句子
1. He ever had many _________( opportunity) to visit Beijing, but he gave them up.
2. Your homework must _________( finish) this evening.
3. Volunteering in the hospital is a good _________ ( experience) for me.
4. He often _________( study) foreign books with his friends.
5. Do you have to wear_________ ( uniform) at school?
6. __________(目前 ) , children under 14 are not al lowed to go to bars.
7. We should _________ (集中于) the study.
8. Last year I _________(有机会) to study in foreign countries.
9. You say that the baby can stay at home by himself, but I_________(不同意) you. I think it's
dangerous.
10. Getting up early ___________(对……有益处)your health.