Questions on 'space technology' category
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316
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316
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332
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296
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344
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335
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316
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294
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289
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316
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322
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246
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225
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169
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150
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150
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answer
168
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answer
171
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135
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answer
140
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128
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answer
116
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answer
126
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135
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answer
135
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answer
285
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383
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426
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391
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361
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374
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363
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403
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465
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answer
194
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