Please help me find these abbreviations KM, EJ, MJ, DR, SP, LB

KM:

Knowledge Management Knowledge Management

(or player KMPlayer)

(or unit: kilometer)

EJ:

Environmental Justice Environmental Protection Agency

MJ:

Mastic Joint Mastic Joint

Michael Jackson Michael Jackson

(or: Michael Jordan Michael Jordan)

DR:

deposit receipt deposit receipt

Digital x-ray photography Digital Radiography

SP:

Saturated polyester plastic Saturated polyester plastic

LB:

Local Battery Local Battery

(Telephone) Line Busy

Left Back Left Back

Diary, record book Log Book

Load (fetch) buffer Load Buffer

Line Buffer

Letter Box

Licensed bank

LB Technology Langmuir-Blodgett

libra