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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.
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（四）发现违反治安管理行为人有其他违法行为的，在对违反治安管理行为作出处罚决定的同时，通知或者移送有关主管机关处理。
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Sasha is still hoping to go to BludFest in the Czech Republic as she feels it's "not too far away".
A proof-of-concept study opens up an avenue for treating solid tumours that express low levels of a target antigen.，详情可参考同城约会