第9题: [单项选择]19岁患者,近半个月来感觉右上前牙唇面有一龋洞,遇冷热酸甜敏感,无自发痛 可见光固化复合树脂的光照时间不得少于 A. 20~40s B. 40~60s C. 60~70s D. 70~80s E. 80~90s 参考答案:A 答案解析:为保证树脂尽可能固化,应选择高强度光固化器,光照时间不得少于40~60s,树脂层厚度不超过2.0~2.5mm。
第18题: [单项选择]A. Disappointed. B. Surprised. C. Nervous. D. Uninterested. 参考答案:C 答案解析:[解析] W: You don’t seem to be able to sit still for a whole morning.What’s going on Is the