治疗指数的意义是()
A.治疗量与不正常反应率之比
B.治疗剂量与中毒剂量之比
C.LD50/ED50
D.ED50/LD50
E.药物适应证的数目
参考答案:C
孕39周,有规则宫缩17h,宫口开大2cm,胎头下降缓慢,胎心音正常。诊断子宫收缩乏力。
为预防产后出血,胎盘娩出前应注意()。
A.产妇生命体征
B.产妇情绪变化
C.不过早牵拉脐带
D.禁止使用缩宫素
E.补充能量水分
In relation to the capital and financing of companies:
(b) Explain and distinguish between the rights of a shareholder and the rights of a holder of an unsecured debenture in a company. (6 marks)