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（三）行政裁量权基准等行政执法标准制度；
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Detecting e-bike battery fires, for example, is particularly difficult, since these can unfold suddenly. Some researchers are working on new ways of sensing smoke and fire, perhaps even more quickly than before. But, take note: any certified, working smoke alarm is better than nothing.
过去三个月，a16z发了三份报告。
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