(江西专版)2019中考物理总复习第十八讲信息的传递能源与可持续发展真题演练.doc

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1第十八讲 信息的传递 能源与可持续发展真题演练考点 电磁波与现代通信(6 年 3考)1(2018 江西 10题 2分)骑行共享单车 前,需先用手机扫码 将信息通过_传递到共享平台,共享平台再将解锁信息以_ _m/s的速度传递到该车,进 行解锁。考点 能源与 可持续发展(6 年 1考)2(2014江西 6题 2分)能量守恒定律: 能量既不会凭空消失,也不会凭空产生,它只会从一种形式_为其他形式,或 者从一个物体_ _到其他物体,而在这两个过程中,能量的总量保持不变。参考答案1电磁波 310 82转化 转移

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