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于海广补充说，该遗址还首次发现以半地穴式房址为特色的龙山文化早期小型完整聚落，房址数量较多、保存较好、排列有序，是海岱地区龙山文化考古的新突破，为探讨龙山时期各类功能和形态不同的聚落提供了新资料，对了解龙山社会的复杂性具有重要学术意义。

Article 108 of the TFEU mandates that member states notify the European Commission of planned state aid, which may not be implemented until the Commission completes its review and grants approval. However, the Treaty authorizes the EU Council and the Commission to specify types of aid that do not require notification. To this end, the Commission issued the General Block Exemption Regulation (GBER) and the De Minimis Regulation. Under the GBER, member states may provide regional aid, SME aid, environmental aid, R&D and innovation aid, training aid, broadband infrastructure aid, local infrastructure aid, support for European territorial cooperation projects, and aid related to financial products backed by the InvestEU Fund without notifying the Commission. The De Minimis Regulation exempts from notification any aid of up to EUR 300,000 per enterprise over 3 fiscal years.

此外，中国高铁营业里程位居世界第一位，超过世界上其他国家高铁营业里程的总和，中国是世界上唯一实现高铁时速350公里商业运营的国家。

在活动区，“图书奥林匹克”主题挑战活动，吸引了众多读者踊跃参与。记者在现场采访时，“最佳校对员”比赛正在进行。选手们需在指定时间内从一篇长文中挑出10处语病，获胜者可得到一张书展购书券。