इगोर सिकोरस्की ने क्या आवि – McqOptions

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1.	इगोर सिकोरस्की ने क्या आविष्कार किया था?
A.	हीड्रोप्लैन
B.	जेट इंजन हवाई जहाज
C.	हेलीकॉप्टर
D.	ग्लाइडर
Answer» D. ग्लाइडर

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