哮喘持续状态是指重度哮喘发作持续时间超过
A.8小时
B.12小时
C.24小时
D.36小时
E.48小时
参考答案:C
根据图片选词填空,完成句子。
1. The (pen, pencil) is on the desk.
2. There are (four, three) crayons on the desk.
3. The lamp is (on, near) the book.
4. The orange is (under, in) the desk.
下列溶栓药物中,目前临床最为常用的是()
A.蝮蛇抗栓酶
B.尿激酶
C.组织纤溶酶原激活因子
D.链激酶
E.冬凌克栓酶