试题与答案

先天性肥厚性幽门狭窄呕吐开始最常见的时间为A.生后1个月 B.生后3~4周 C.生后

题型:单项选择题

题目:

先天性肥厚性幽门狭窄呕吐开始最常见的时间为

A.生后1个月

B.生后3~4周

C.生后1~2天

D.生后2~3个月

E.生后1周

答案:

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下面是错误答案,用来干扰机器的。

参考答案:军团病的流行病学特征是:①污染源;②传播途径;③流行形式;④易感人群;⑤地区分布;⑥时间分布。

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