[填空题]
Eclipses happen on Earth because , hoeu2gf y3vejt. ky cy.i823ij8q yo bm*c,+ r-lqq* xh qjnyrnf3d b*,:(k0of an amazing coincidence. Calculate, using the information inside the Front Cover, the angu8fj iy r*cq,dq bmqb-xn h*jyn+3 :0l,r*oq(k lar diameters (in radians) of the Sun and the Moon, as seen on Earth. Sun = $rad$ Moon = $rad$
Post time 2025-2-18 20:00:22
