有哪些英文缩写（知道一个说一个）急......

WCG

CS

NBA

MBA

MSN

CPU

WTO

VIP

BEC

ISO

IT

PSP

GPS

UFO

PDA

CPA

PS

AD

VB

OEM

EMS

FBI

GRE

SAP

KFC

CET

IBM

BMW

OA

SQL

ADSL

GM

ACCA

GPRS

CAD

BBS

BT

USB

PK

ID

AIDS

IELTS

AFK

DNS

DIY

LG

DOS

HP

CSDN

TOEFL

ATM

rpwt

PC