alleryকোনটো বছৰত SLV-য়ে ইয়াৰ প্ৰথমটো সফল উপগ্ৰহ উৎক্ষেপণ কৰিছিল?
A1975
B1979
C1983
D1980
Answer & Solution
Correct answer: D. 1980
১৯৭৯ চনৰ প্ৰথমটো SLV উৰণ কক্ষপথত উপনীত হ'বলৈ ব্যৰ্থ হৈছিল, আনহাতে ১৯৮০ চনৰ উৎক্ষেপণে ৰোহিণী ছিৰিজ-১ উপগ্ৰহটোক কক্ষপথত স্থাপন কৰিছিল।
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