组织型纤溶酶原激活物(t-PA)激活PLG变为PL需()
A.尿激酶型纤溶酶原激活物
B.凝血酶
C.纤溶酶原激活抑制物-1
D.蛋白C抑制物
E.纤维蛋白
参考答案:E
会议经费结算时,与会人员可采用()等支付方式。
A.现金
B.支票
C.记账
D.信用卡
The reform and opening-up policy has___________ great changes to our life. [ ]
A. brought about
B. brought out
C. brought in
D. brought up