A-level缩写的意思

OP MJ AAS BL ROI UofMELB RA BEC UC M.Ec. B.Eng CFR A-level AQ TWE HKUST NSA DNA AC CBC B.S.Ed MCAT HE ESP PTT ADIDA M.I.E. TA PE NJTV UQ ORC B.RM ADELAIDE OT AD AAU LA M.A.Ed MSME SWJTU ABC AJED TFF DILS BAEE AR B.Eng.Mgt CTC WD ME ALR UD AIE DT WP TESOL CLEP XQ PG