牙本质生长线之间的距离约为A.1μm B.2μm C.3μm D.3.5μm E.4-8μm

作者: tihaiku 人气: - 评论: 0

问题牙本质生长线之间的距离约为

选项 A.1μm B.2μm C.3μm D.3.5μm E.4-8μm

答案 E

解析

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