第9题: [单项选择]关于疝临床类型中下列描述错误的是() A. 嵌顿疝和绞窄性疝临床上很难完全区分 B. 疝囊颈部粘连是导致难复性疝常见原因 C. 儿童斜疝嵌顿后很少发生绞窄 D. Richter疝是嵌顿疝 E. Littre疝是非嵌顿疝 参考答案:E 答案解析:Littre疝是指疝嵌顿的内容物为小肠憩室,属嵌顿性疝。
第15题: [单项选择]保留抗原结合部位的最小功能片段是() A. Fab B. Fv C. ScFv D. VH E. Fc 参考答案:B 答案解析:Fab抗体:Fab片段由H链Fd段和完整L链通过二硫键形成的异二聚体,仅含一个抗原结合位点。Fv抗体:Fv是由L链和H链V区组成的单价小分子,是与抗原结合的最小功能片段。ScFv是用适当的寡核苷酸接头
第26题: [单项选择]{{B}}Questions 11 to 18 are based on the conversation you have just heard.{{/B}} A. She should be careful about her money. B. She should buy the brown suit. C. She should find another job to make more money. D. She shouldn’t buy the brown suit. 参考答案:A 答案解析:[听力原文]
W: I certainly would like to buy the brown suit I saw in the department store, but don’t hav