[填空题]
The Moon orbits the Earthj+ l.a t;or0br such that the same side always faces the Earth. Deter3 kvhxpmaq ,; qj r,m)f/q/hp * omm8bc.09vaqmine the ratio of the Moon’s spin angular momentum (about its own axis) to its orbital angular momentum. (In,c;h*vm, h 83.o)a9/qmrm / f0qpb qk vmxpqja the latter case, treat the Moon as a particle orbiting the Earth.) $\times10^{ -6}$