新标准将PM2.5年均浓度一级限值从过去的15微克/立方米调整为10微克/立方米，二级限值从过去的35微克/立方米调整为25微克/立方米。国家公园、自然保护区等一类区适用一级浓度限值；人们日常生活的居住区、商业交通居民混合区、文化区、工业区和农村地区等二类区适用二级浓度限值。
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The world's largest automaker has had a somewhat difficult relationship with battery-electric vehicles. Toyota was an early pioneer of hybrid powertrains, and it remains a fan today, often saying that given limited battery supply, it makes sense to build more hybrids than fewer EVs. Its first full BEV had a rocky start, suffering a recall due to improperly attached wheels just as the cars were hitting showrooms. Reviews for the awkwardly named bZ4x were mixed; the car did little to stand out among the competition.
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如科研篇里面所讲，AI 确实帮我克服了选择困难症。它在我不知道选什么的时候给我建议，在我质疑自己选择的时候坚定我的信心。而且它看起来真的很理性、可靠，它的一切观点都有论证。这是所有自信不足的人所梦寐以求的伙伴。但是尽管它帮助我做出了选择，但这些选择却并不是如我希望的那般正确。
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