Methods Intensive training of the occupational protective knowledge was provided for 80 persons working in blood dialysis room, and a questionnaire survey was made before and after the training.
方法对80例血透室工作人员进行职业防护知识强化培训，在培训前后各进行一次问卷调查。
2
Methods The harmful levels of occupational hazards and the effect of protective measures were evaluated by field occupational health survey, engineering analysis, detection and test.
方法采用现场职业卫生调查、工程分析、检测检验等方法，评价其职业病危害程度和防护措施效果。
3
According to the survey materials, this article analyses the reason of soil erosion and water loss, and put a general protective measures.