题目: 双扩平板法出现多条沉淀线的原因是()A.抗原抗体过剩B.抗原抗体相等C.抗原抗体缺乏D.抗原抗体不纯E.抗原抗体比例不当 答案: 参考答案:D解析:出现沉淀线,表明存在相应的抗原和抗体,出现多条沉淀线,则说明抗原和抗体不是单一成分。
题型:选择题 Jim: What would you like, please? Tom: __________ [ ]A. They are hot dogs. B. My name is Tom. C. I'd like some hot dogs. D. How are you? 查看答案