卡环臂放置在基牙上的正确部位是A．卡环臂尖放置在基牙的非倒凹区，卡环体放置在基牙的倒凹区B．卡环臂尖和卡环体放置在基牙的倒凹区C．卡环臂尖和卡环体...

作者: rantiku 人气: - 评论: 0

问题卡环臂放置在基牙上的正确部位是

选项 A．卡环臂尖放置在基牙的非倒凹区，卡环体放置在基牙的倒凹区 B．卡环臂尖和卡环体放置在基牙的倒凹区 C．卡环臂尖和卡环体放置在基牙的非倒凹区 D．卡环臂尖放置在基牙的倒凹区，卡环体放置在基牙的非倒凹区 E．卡环臂和卡环体均放在基牙的观测线上

答案 D

解析

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