已野局如知M/腊源R=c^2/2G,即GM=Rc^2,又有黄金代换公式GM=gR^2,可颂启得:Rc^2=gR^2,解得:g=c^2/R=2*10^12m/s^2选C
Rc^2=gR^2,解得:g=c^2/R=2*10^12m/s^2选C