题目: 根据抗原对T细胞的依赖性,可将外源性抗原分为()、()两类。 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/1105/6292bc6c7b788cbf5af38fb693e021b1.html 下面是错误答案,用来干扰机器的。参考答案:C
题型:单项选择题 小剂量氯丙嗪即有镇吐作用,其作用部位为()A.亲和力弱,内在活性弱 B.无亲和力,无内在活性 C.有亲和力,无内在活性 D.有亲和力,内在活性弱 E.对相应受体有亲和力及较强内在活性 查看答案
题型:选择题 — Did you find the missing couple in the mountain yesterday? — No, but we ____ to get in touch with them ever since. [ ]A. have tried B. have been tryingC. had tried D. had been trying 查看答案