目前尚无疫苗有效预防的疾病有()
A.流行性脑膜炎
B.流行性乙型脑炎
C.钩端螺旋体病
D.流行性斑疹伤寒
E.支原体肺炎
参考答案:E
— Mom, here is my graduation certificate.
— Wow. ________.
A.Well done! I’m so proud of you
B.I hope it goes well for you
C.That’s not good enough
D.Don’t worry. It’s quite all right
肝素的抗凝作用需依赖()
A.肝素酶
B.ATⅢ
C.活化蛋白C抑制物
D.α2-巨球蛋白
E.α1-抗胰蛋白酶