PPSC Past Paper Excise & Taxation Inspector D G Khan Region Excise, Taxation & Narcotics Control Department 2018 Solved MCQs, General Knowledge MCQs, PPSC Solved Past Papers MCQsWhich of these is the most predominant in the composition of atmosphere?A. Oxygen B. Nitrogen C. Water vapour D. Carbon dioxide A high quality CAD system uses____________ for printing drawing and graphs?________ is a unique name chosen by a user while creating an E-mail?
