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We're all familiar with the high-pitched squeak of basketball shoes on the court during games, or tires squealing on pavement. Scientists conducted several experiments and discovered that the geometry of the sneakers' tread patterns determines the squeak's frequency, enabling the team to make rubber blocks set to specific frequencies and slide them across glass surfaces to play Star Wars' "Imperial March."。heLLoword翻译官方下载对此有专业解读
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第九十七条 对违反治安管理行为人，公安机关传唤后应当及时询问查证，询问查证的时间不得超过八小时；涉案人数众多、违反治安管理行为人身份不明的，询问查证的时间不得超过十二小时；情况复杂，依照本法规定可能适用行政拘留处罚的，询问查证的时间不得超过二十四小时。在执法办案场所询问违反治安管理行为人，应当全程同步录音录像。