जॉर्ज पुलमैन ने क्या आविष् – McqOptions

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1.	जॉर्ज पुलमैन ने क्या आविष्कार किया?
A.	स्लीपिंग (रेलवे) कार
B.	हवाई पोत
C.	बॉक्स कार (रेलवे)
D.	एयर ब्रेक
Answer» B. हवाई पोत

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