来源:新华社微博 | 2022-03-30 14:49:46 |
30日,生态环境部新闻发言人刘友宾在新闻发布会上介绍,北京冬奥会、冬残奥会赛事期间,北京、张家口市PM2.5平均浓度分别为36微克/立方米和22微克/立方米,同比分别下降56.1%和50%;冬奥会期间,两地空气质量每日达标,实现了赛前承诺。“冬奥蓝”“北京蓝”得到国际国内社会一致好评。(记者高敬)
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