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电磁波与信息技术

> 关于电磁波的以下说法正确的是（　　） A．电磁波的传播与声波一样，要有介质才能传播 B．电视用电磁波传播图象和声音信号 C．电磁波的频率越高，波速越大 D．手机只能接收电磁波，不能发射电磁波

问题：

发布时间：2024-09-10

关于电磁波的以下说法正确的是（　　）

A．电磁波的传播与声波一样，要有介质才能传播

B．电视用电磁波传播图象和声音信号

C．电磁波的频率越高，波速越大

D．手机只能接收电磁波，不能发射电磁波

参考答案：

提问用户：un***A9F

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关于电磁波的以下说法正确的是（ ） A．电磁波的传播与声波一样，要有介质才能传播 B．电视用电磁波传播图象和声音信号 C．电磁波的频率越高，波速越大 D．手机只能接收电磁波，不能发射电磁波

可能感兴趣的题目：

关于电磁波的以下说法正确的是（　　）

A．电磁波的传播与声波一样，要有介质才能传播

B．电视用电磁波传播图象和声音信号

C．电磁波的频率越高，波速越大

D．手机只能接收电磁波，不能发射电磁波