gas welding me oxygen or accytelen ka ratio kitna hota hai

a 1:1 b 2:1 c 1:2 d 3:2

  • Vipin
  • 11 Dec
  • 3525 Views
  • 51 Answers
Your Answer

1:1 h dosto

1
आई टी आई
Practice Mock Test
आई टी आई