【单选题】【消耗次数:1】
十二指肠溃疡的好发部位为
十二指肠球后部
十二指肠水平段
十二指肠降段
十二指肠升段
十二指肠球部
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①  十二指肠各段
②  十二指肠降部
③  十二指肠球部
④  升十二指肠部
⑤  十二指肠下段后壁
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①  胃小弯近幽门部
②  十二指肠降部
③  十二指肠球部
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①  十二指肠降部外侧壁
②  十二指肠降部后内侧壁
③  十二指肠降部前内侧壁
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⑤  十二指肠升部
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②  20~30岁
③  20~50岁
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