铅对机体影响的早期变化是A．卟啉代谢障碍B．贫血C．铅面容D．腹部绞痛E．腕下垂

作者: rantiku 人气: - 评论: 0

问题铅对机体影响的早期变化是

选项 A．卟啉代谢障碍 B．贫血 C．铅面容 D．腹部绞痛 E．腕下垂

答案 A

解析

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