OPA缩写的意思

PCC CENSA ACC CMC SGU ECS CTF EIA CAE INDA CEL AAS CSTS CADD CPL GPDC TMCC CBG CAT CEM CGRM CAPP CAP CAD CAE CSTNET SA&SD ICS CLE CAT VCL SWI SE OBC IPLI BOB NPC IMAP CAMPER PCMCIA ICP SDS ETX CARE PCCG CSD CDS GAPP ICS NU PD CMC SDA CSD CDI IEEE-CS CAP AST ASPC ACS