蛔虫的感染阶段是A．感染期虫卵B．杆状蚴C．丝状蚴D．受精蛔虫卵E．未受精蛔虫卵

作者: rantiku 人气: - 评论: 0

问题蛔虫的感染阶段是

选项 A．感染期虫卵 B．杆状蚴 C．丝状蚴 D．受精蛔虫卵 E．未受精蛔虫卵

答案 A

解析：蛔虫卵必须在外界适宜条件下发育至感染期虫卵才具感染性。

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