龋1/3洞制备时洞底应与牙表面平行的原因是() ["A．为了避免损伤牙髓","B．为了获得侧壁固体","C．为了和牙轴平行","D．为了底平","E．为了美观"] 激素按照其化学本质分类不包括() ["A．肽及蛋白质类","B．维生素衍生物类","C．类固醇类","D．氨基酸衍生物类","E．脂肪酸衍生物类"] 窝洞预备时，未完全去除无基釉，可能出现的后果是() ["A．继发龋","B．充填物松动脱落","C．牙折裂","D．三者均有","E．三者均没有"] 银汞合金充填后牙面洞，窝洞预备的最小深度为() ["A．1.5mm","B．1.0mm","C．2.0mm","D．3.5mm","E．2.5mm"] Graves病中，最明显的体液免疫特征是病人血中可检出() ["A．长效甲状腺刺激素","B．甲状腺刺激免疫球蛋白","C．抗甲状腺微粒体抗体","D．抗甲状腺过氧化酶抗体","E．抗甲状腺球蛋白抗体"] 下列不属于窝洞基本固位形的是()