发布时间:2025-01-25 07:36:43
装个智能锁的话,确实有保障一点,必达的智能门锁还可以的,很多家庭都在使用。上提门把就可以直接反锁了,可以用指纹或者密码开门。遇到非法撬门的时候,门锁会发出警报声,并且会自动锁死,安全性能不错的
假如我站在一座楼顶层然后往楼下扔石头已知石头的质量和下落时间能否求高度
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