香豆素类药物的抗凝作用机制是()
A.妨碍肝脏合成Ⅱ、Ⅶ、Ⅸ、Ⅹ凝血因子
B.耗竭体内的凝血因子
C.激活抗凝血酶Ⅲ
D.激活纤溶酶原
E.抑制凝血酶原转变成凝血酶
参考答案:A
If there is anyone out there still doubts that America is a place where all things are possible,tonight is your answer.
A.where
B.who
C.which
D.whom
醋酸甲羟孕酮临床常用于()。
A.痤疮
B.再生障碍性贫血
C.晚期乳腺癌
D.习惯性流产