从根本上说,安全供血取决于:()
A.试剂的灵敏度
B.试剂的特异性
C.献血者
D.实验操作者
参考答案:C
有关NHHDC描述错误的是
A.病死率极高,15%~20%
B.诱因多由于感染和应激因素
C.起病多隐蔽
D.出现神经症状和进入昏迷前无前驱期
E.以脱水和神经系统两组症状和体征为主
In relation to contract law, explain the concepts of:
(c) The importance in distinguishing between an offer and an invitation to treat. (2 marks)