Questions on 'space technology' category
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269
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151
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817
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837
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0
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356
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0
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0
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382
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0
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0
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825
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0
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835
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0
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0
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419
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0
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0
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534
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0
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376
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0
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0
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362
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0
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0
answer
805
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0
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0
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855
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0
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0
answer
410
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0
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0
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431
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0
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0
answer
872
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0
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0
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195
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0
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0
answer
386
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0
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0
answer
408
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0
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0
answer
457
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0
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0
answer
448
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0
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0
answer
396
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0
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0
answer
232
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0
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0
answer
291
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0
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0
answer
464
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0
answer
411
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0
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0
answer
194
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0
answer
249
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201
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215
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0
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185
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238
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230
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answer
439
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