试题与答案

婴儿出生后的造血器官主要是() A.胸腺 B.卵黄囊 C.肝脏 D.骨髓 E.脾脏

题型:单项选择题 A1型题

题目:

婴儿出生后的造血器官主要是()

A.胸腺

B.卵黄囊

C.肝脏

D.骨髓

E.脾脏

答案:

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