The bill has also established a joint qualification certification system and a professional service oil network market.
同时建立了联合资格认证制度和专业服务石油网络市场。
The operators for critical and special process must be provided with special and professional training, and can only be allowed to work with qualification certification.
关键工序、特殊工序操作人员要经过专门、专业培训后，持证上岗。
The operators for critical and special process must be provided with special and professional training, and can only be allowed to work with qualification certification.
关键工序、特殊工序操作人员要经过专门、专业培训后，持证上岗。
应用推荐