ABC CBC CBA MBA CAAC IBM DDD IDD BA BC AD HK a m p m What is the abbreviation, urgent!! Homework!!

Simple, they are all right.

AD BC BC CBA Chinese Basketball Association BA

ABC is the American Broadcasting Corporation Copy, CBA is the Chinese Basketball Association, CD is the CD-ROM CD, the English abbreviation of CBC has five meanings, namely: also known as automatic control of corners, CBC Group Corporation of the United States, encrypted block chain mode, CBC (Cell Broadcast Centre) Cellular Broadcasting Center, Japan CBC Co., Ltd., BA is BA = Building Automation, building automation, refers to international advanced building equipment management, CAAC is the Civil Aviation Administration of China, BBC is the British Broadcasting Corporation, BC is BC, AD is advertising, DDD has multiple meanings, there are DDD in the field of animation, communication and programming, as well as DDD in the field of software engineering and **

Uneco should be unesco, UNESCO;

pla Chinese People's Liberation Army.

ABC ABC.

IBM International Business Machines.

IOC International Olympic Committee.

CAAC Civil Aviation of China.

MBA, Master of Business Administration.

NBA American Professional Basketball League.

DDD Long Distance Direct Dialing**.

EMS Post Express Post.

adabbr.

A.D. (Anno Domini).

bcn.BC CAAC

n.Civil Aviation of China.

NBA1 narrow-band allocation 2 NBA.

ABC Radio Australia, AD AD, BC BC, Canadian Radio, CBA, Chinese Basketball Association, BEC Business English Qualifications, CAAC, Civil Aviation of China, BBC, British Radio, CCP, Communist Party of China, CCTV, China** Television, IBC International Broadcasting Center, IDD, International Live Distance**.

ABC U.S. or Australian Broadcasting Corporation AD Advertising BCC CBC U.S. CBC Group of Companies.

CBA, Chinese Basketball Association, BEC Business English Certificate, CAAC, Civil Aviation of China, BBC, BBC.

CCP Birth Day CCTV China ** TV IBA International Bartender Association.

IDD International Live Streaming.

I also just learned this, in the first year of junior high school.