题目内容：
知识点：铁 吸收铁的主要部位是 A．胃底部
B．胃窦部
C．小肪上部
D．回肠
E．蛄肠
参考答案：
答案解析：
单选题：知识点：铁 吸收铁的主要部位是
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吸收铁的主要部位是 A．胃底部
B．胃窦部
C．小肪上部
D．回肠
E．蛄肠
吸收铁的主要部位是 A．胃底部
B．胃窦部
C．小肪上部
D．回肠
E．蛄肠
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