一、我国公用企业行业垄断表现公用企业是指通过网络或者其他基础设施提供公共服务,以网络运营为特征,具有一定程度的自然垄断性和公益性的企业。典型的公用企业类型有电力、供水、电信、民航、铁路运输、邮政等等,其一般具有网络性、规模经济性、边际成本的递减性、公益性和经 First, monopoly performance of public utilities in China Public enterprises refer to enterprises that provide public services through networks or other infrastructures and are characterized by network operations and have a certain degree of natural monopoly and public welfare. Typical types of public enterprises are electricity, water supply, telecommunications, civil aviation, rail transport, postal services, etc., which generally have network, economies of scale, diminishing marginal costs, public welfare and economic