单选题下列哪项是成年人最主要的造血器官？（ ）A淋巴结B胸腺C脾D肝E骨髓
单选题
下列哪项是成年人最主要的造血器官？（ ）
A
淋巴结
B
胸腺
C
脾
D
肝
E
骨髓
参考解析
解析：
暂无解析
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