重症支气管哮喘发作伴酸中毒时,疗效最易被减低的药物是() ["青霉素","四环素","红霉素","激素","支气管扩张剂"]
有关典型水痘,不正确的是()。 ["病原体为水痘一带状疱疹病毒","潜伏期为11~21天","皮疹为痒性皮疹,从斑丘疹变为水疱疹","离心性分布","口腔、结膜、生殖器处可出现黏膜皮疹,易形成溃疡"]
欧美国家肝硬化的主要原因是()。 ["病毒性肝炎","营养缺乏","慢性乙醇中毒","循环障碍","长期胆汁淤积"]
临床治疗恶性肿瘤中非实体瘤的主要方法为() ["手术治疗","化学治疗","基因治疗","放射治疗","免疫治疗"]
哮喘严重发作时,下列哪项是通气不足的可靠指标() ["明显发绀","弥漫性哮鸣音","呼气性呼吸困难","PaO<60mmHg","PaCO>50mmHg"]
汽轮机“发电机主保护”应在定速()r/min并网前投入。