治疗指数
参考答案:
药物的半数致死量与半数有效量的比值(LD50/ED50),用以表示药物的安全性。
— Did you see the girl in white pass by just now?
— No, sir. I a newspaper.
A.read
B.was reading
C.would read
D.am reading
高排低阻型休克选用:()
A.缩血管药
B.扩血管药
C.肝素
D.盐皮质激素
E.糖皮质激素