A.四個月 B.五個月 C.六個月 D.七個月
A.雙方各自承擔一半 B.雙方協(xié)商承擔 C.非主導的電信業(yè)務(wù)經(jīng)營者承擔 D.主導的電信業(yè)務(wù)經(jīng)營者承擔