railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) General Knowledge Science Technology and Inventions

खालीलपैकी डिझेल इंजिनचा शोध कोणी लावला?

1
रुडॉल्फ डिझेल
2
ओटिस
3
लॅरी पेज
4
राणे लावणेच
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