[填空题]
A typical white-dwarf star, which once w9 mhfupo 7c6ih:q/ o8vas an average star likef 64b.pcntrav g0hl9* our Sun but is now in the l0. * rab9hv6tcfg lp4nast stage of its evolution, is the size of our Moon but has the mass of our Sun. What is the surface gravity on this star? $\times 10^7$
