सेफ्टी ब्रेक का आविष्कार किसने किया, जो लिफ्ट को दुर्घटनाग्रस्त होने से रोकते हैं? - Study24x7
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Manisha Nama
27 Feb 2019 11:51 AM study24x7 study24x7

 सेफ्टी ब्रेक का आविष्कार किसने किया, जो लिफ्ट को दुर्घटनाग्रस्त होने से रोकते हैं?

A

थॉमस एडिसन (Thomas Edison)

B

 एली व्हिटनी (Eli Whitney)

C

 हेनरी फोर्ड (Henry Ford)

D

 एलीशा ओटिस (Elisha Otis)

SSC Railways Arts
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