易引起小儿骨髓外造血的原因是A．恶性贫血B．骨髓造血功能不完善_爱下问搜题

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问题单项选择题

易引起小儿骨髓外造血的原因是

A．恶性贫血
B．骨髓造血功能不完善
C．骨髓造血器官功能活跃
D．缺乏黄髓，造血代偿潜力很低
E．红髓过多，造血代偿潜力过高

答案

参考答案：D

完形填空

完形填空
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单项选择题

肾移植后最常见的病毒感染是（）。

A.EB病毒

B.CMV病毒

C.HIV病毒

D.水痘-带状疱疹病毒

E.单纯疱疹病毒