[填空题]
The Moon orbits the Eay9r8m l)4jaumi/ hg) er u (c) tm3ju4q er2*gb3frzw3sth such that the same side always faces the Earth. Determine the ratio of the Moon’s spin angular momentum (about its own axis) to its orbital angular momentum. (In the latter case, trez jt)2urq we bsgcr*(343ufm3at the Moon as a particle orbiting the Earth.) $\times10^{ -6}$