试题与答案

食管异物最常见于______,又称第一狭窄,由环咽肌收缩所致,距上切牙约____cm

题型:填空题

题目:

食管异物最常见于______,又称第一狭窄,由环咽肌收缩所致,距上切牙约____cm。

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B

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