论文部分内容阅读
一次,在一所幼儿园里,有5个孩子几乎在同一段时间内出现了腹痛、关节痛、不想吃东西等症状。经医生检查,才知道他们是患了慢性铅中毒症。那末,这些铅是怎样进入孩子体内的呢?原来是该幼儿园不久前进行了装修,地板和桌椅都刚刚油漆过,而油漆
Once, in a kindergarten, there were five children with abdominal pain, joint pain and no desire to eat during the same period of time. After a doctor check, they know they are suffering from chronic lead poisoning. So, these lead is how to get into the body of the child? The original is the kindergarten recently renovated, the floor and tables and chairs have just been painted, and paint