冠桩直径一般不超过A.根径的1/3 B.根径的1/2 C.根径的2/3 D.根径的3/4 E.根径的3/5

作者: tihaiku 人气: - 评论: 0

问题冠桩直径一般不超过

选项 A.根径的1/3 B.根径的1/2 C.根径的2/3 D.根径的3/4 E.根径的3/5

答案 A

解析

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位置: 第 85 行

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