荆芥的功效是（） ["发表通窍，胜湿止痛，止血","祛风解表，透疹消疮，止血","发表止痉，消疮止泻","发表止痛，利水消肿","消疮止泻，透疹止血"]
正常人血清中钙和磷相互的浓度关系是（以mg／dl）（） ["［Ca］×［P］=40～65","［Ca］×［P］=35～40","［Ca］×［P］=25～30","二者不相关","［Ca］↑时［P］↑"]
既能祛风解表，炒炭又可止血的药物是（） ["羌活","白芷","桂枝","荆芥","苍耳子"]
既能发汗解表，又能利水消肿的药物是（） ["麻黄、荆芥","香薷、紫苏叶","麻黄、香薷","紫苏叶、生姜","荆芥、防风"]
医疗缺陷
试述急诊科的医疗范围。
