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根管最狭窄处（　　）。

单选题
2022-06-24 12:12
A、约距根尖孔lmm处
B、约距根尖lmm处
C、约距根颈1/3与根中1/3交界处
D、约距根颈1/3与根尖1/3交界处
E、约在根管口处
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正确答案
A
试题解析

根管最狭窄处不在根尖孔，而是距根尖孔约1mm处。
标签： 口腔执业医师 综合笔试
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逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。
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