题目

With eight bloodshot eyes fixed on a flying object, the pains of a two­year project were about to bear fruit. It was Wang Hongyi's first test flight of an unmanned aerial vehicle (UAV) (无人机) designed and assembled (组装) with his teammates from the Aero­Sport Club (航模队)at Shanghai Jiaotong University. Wang is a senior mechanical engineering and automation major.He has been a plane model fan since childhood.As a freshman, he spent two nights building a model aircraft and took it to the sports field just for fun.Wu Junqi, the coach of Shanghai Jiaotong University's Aero­578.6是44的多少倍？