一位伟大的发明家逝世时,一个国家的总统提议全国各地同时熄灭电

一位伟大的发明家逝世时,一个国家的总统提议全国各地同时熄灭电灯一分钟以示哀悼。这位发明家是

A.卡尔·本茨        B.法拉第        C.西门子        D.爱迪生

答案

D

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