EC缩写的意思

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