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.
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def run(self) - None:，这一点在heLLoword翻译官方下载中也有详细论述
从“靠近人才”转向“靠近电力”。西海岸供电紧张、成本高企，巨头被迫向中西部、南部电力洼地迁移，形成“能源在哪里，算力就在哪里”的新格局。，详情可参考雷电模拟器官方版本下载