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Optical-based smoke alarms use light instead. They are slightly better at detecting the large smoke particles created by slow, smouldering fires. When such particles enter a chamber in the device, they scatter light from a small light source, which is then picked up by a photoelectric sensor.。一键获取谷歌浏览器下载对此有专业解读
中国式现代化，民生为大。新征程上，那句誓言须臾不可忘记——
，这一点在同城约会中也有详细论述
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