China's public enterprises appear double long-term features of market operation and regulation, which has natural monopoly nature as well as the main character of administrative body.
我国的公用企业长期具有市场经营与行业管理的双重特征，既具有自然垄断的性质又具有行政主体的性质。
The system includes the teaching system of monitoring main body, the teaching system of monitoring object, the teaching mechanism of regulation and control and other aspects.
该体系包括教学监控主体体系、教学监控客体体系以及教学调控机制几方面内容。
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