下列关于声音的产生和传播的说法中正确的是 A．声音都是靠空气来传播的b．只要物体振动人就能听到声音c．回声是声音被障碍物反射而形成的d Sketch Coloring Page

下列关于声音的产生和传播的说法中正确的是 A．声音都是靠空气来传播的b．只要物体振动人就能听到声音c．回声是声音被障碍物反射而形成的d Template

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anonymous
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tomski下列关于声音的产生和传播的说法中正确的是 a．声音都是靠空气来传播的b．只要物体振动人就能听到声音c．回声是声音被障碍物反射而形成的d coloring

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下列关于声音的说法中不正确的是 A“响鼓也要重锤敲说明声音是由振动产生的且振幅越大响度越大B“隔墙有耳说明固体能传声C sketch template

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百度教育 sketch template

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