教室里鸦雀无声，160多名来自农村沼气建设第一线的沼气技工，每堂课都聚精会神地听着老师的讲解，并细心地记着笔记。授课老师有的是省农村能源工作站的干部、工程师，有的是地州市级农村能源工作站的站长，他们都经过农业部特有工程职业技能鉴定师资培训班的培训，持有农业部 In the classroom, there were no more than 160 biogas technicians from the front line of rural biogas construction. Each class listened attentively to the teacher’s explanation and carefully took notes. Some teachers are provincial cadres of rural energy workstations, engineers, and some prefectural-level rural energy work station owners, who have been the Ministry of Agriculture unique engineering vocational skills apprenticeship teacher training courses held by the Ministry of Agriculture