单项选择题
A．a famous Italian physician B．a famous Italian inventor C．a famous Italian electrician D．a famous Italian novelist
A．communicate via radio through the Bristol Channel B．establish a long distance transmission C．transmit the first radio messages D．work with a German physicist
A．was given to Marconi and his compatriot Braun B．was given to Marconi and his partner Braun C．was shared by Marconi and Braun D．was shared by a German scientist and an American scientist