11. In a binary star system, Star A, which has triple the mass of Star B, orbits their common center of mass in circular patbs. Without external forces, what is the relationship between their orbital periods according to Newton's law of universal gravitation?
(A) Star A's period is 1/


答案:99
統計:A:0,B:0,C:0,D:0,E:0
難度:計算中