题型:问答题 The river goes _________ the city and many people like to have a race to swim ________ it every summer.A.through, acrossB.across, throughC.through, throughD.across, across 查看答案
题型:问答题 患者女,60岁,缺失,可摘局部义齿修复,已取印模、灌模,在脱模时石膏牙折断防止模型石膏牙折断的措施哪项是错误的()A.灌注时孤立牙插竹(木)签加强B.推迟脱模C.提早脱模D.脱模时顺牙齿长轴方向轻轻用力E.脱模时先去掉托盘,然后将印模分段破碎,使与模型分离 查看答案