(a) They're carried out at regular and uniform instances in the course of faculty several hours, or sometimes established by university authorities;T? khóa:Vi?t namTh? thaoHi?n ??iC?ng th?ngCu?c s?ngTh? thao vi?t namTinh th?nCon ng??iCu?c s?ng Hello?n ??iTh? d?cxsmbsxmbx? s? mi?n b?cK?t qu? x? s? th? 2K?t qu? x? s?Xsmb th? 2xsmb hôm nayx? s? mi?n