railway DFCCIL Junior Executive 2023 (CBT 1 & CBT 2) Mock Test Fitter Machining Drilling and Reaming

ଏକ ଧାତୁ ଖଣ୍ଡରେ ଏକ ଛିଦ୍ର ତିଆରି କରିବାକୁ  ______ କୁହାଯାଏ । 

1
ସମାପ୍ତ କରିବା
2
ଡ୍ରିଲିଂ
3
ଫେସିଙ୍ଗ 
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କନୁରଲିଂ
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