单项选择题 亚硝酸钠滴定法测定盐酸普鲁卡因含量时用的酸为A. 盐酸B. 硫酸C. 氢溴酸D. 硝酸E. 磷酸

单项选择题 患者女，40岁，诊断为侵蚀性葡萄胎。给予5-氟尿嘧啶和放线菌素D联合化疗8天，该患者可能出现的最严重不良反应是A. 恶心、呕吐B. 脱发C. 骨髓抑制D. 出血性膀胱炎E. 口腔溃疡

单项选择题 Whichof the following would you expect not to be a public nuisance? () A、A factory emitting dangerous chemicals into the atmosphere. B、Noise from one property affecting an elderly neighbour. C、An obstruction to the public use of the highway. D、Pigeon droppings from a bridge onto the highway.