engineering recuitment TANGEDCO Field Assistant (Trainee) Mock Test Basic Science and Engineering Occupational Safety and Health

ग्राइंडिंग करते समय किसका प्रयोग किया जाना चाहिए?

1
काले ग्लास की स्क्रीन
2
मास्क
3
सुरक्षा चश्मे
4
धूप के चश्मे
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