具有分离麻醉现象的全麻药()
A.恩氟烷
B.异氟烷
C.氧化亚氮
D.氯胺酮
E.丙泊酚
参考答案:D
常与麦角胺配伍治疗偏头痛的药物是()
A.二甲弗林
B.洛贝林
C.咖啡因
D.贝美格
E.尼可刹米
In relation to the law of agency, explain how an agency relationship can be established in the following ways:
(d) by necessity. (3 marks)