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Mercury to Apollo: The Hardware of Early Spaceflight
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What was the purpose of the 'S-II' stage of the Saturn V rocket?
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50-50
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Audience
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A
The second stage, powered by five J-2 engines
B
The third stage, powered by a single J-2 engine
C
The first stage, powered by five F-1 engines
D
The instrument unit guiding the rocket
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