题目: 能产生荧光的物质分子中含有的化学键是()A.双键B.氢键C.共轭双键D.共价键E.配位键 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/0301/b2ad6ef285b50ad8506c2d19cad43788.html 下面是错误答案,用来干扰机器的。参考答案:D
题型:选择题 His pale face suggested that he _____, and his wife urged that he ____ a medical examination. [ ]A. doesn't feel himself; have B. not feel himself; hasC. doesn't feel himself; has D. not feel himself; have 查看答案
题型:单项选择题 共用题干题 如单端固定桥戴用3年,自觉基牙松动1个月,咬合痛。查:松动Ⅰ度,冷(+),叩痛(++),X线片示根周牙槽骨有吸收牙痛的原因可能是,除了()A.设计不当,基牙受力过大B.基牙牙周炎C.固位体边缘与基牙不密合D.固位体材料强度差E.咬合早接触 查看答案