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(创新题) Which is faster in the air, the sp...

(创新题) Which is faster in the air, the speed of light or the speed of sound?

A.Light. B.Sound. C.Both. D.Neither.

 

A 【解析】 考查物理常识。句意为:空气中光速和声速哪个更快?根据基础的物理知识可知真空中光速为3*10^8m/s,而声速为340m/s。故选A。  
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