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The technological significance of the program. The educational significance of the program. The philosophical significance of the program. The historical significance of the program.
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Because previous seals all failed. Because it was very complex in running the space program. Because great care has to be taken of the hydraulic fuel pump sealing. Because any crack in the seals would cause disastrous results for the astronauts.
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Fresh members from the academic world participate in the program. The program brings new outlooks to NASA space programs. It is important for the space scientists to exchange information and perspectives. American colleges and universities are a special property of NASA
Because previous seals all failed. Because it was very complex in running the space program. Because great care has to be taken of the hydraulic fuel pump sealing. Because any crack in the seals would cause disastrous results for the astronauts.
I only Ⅱ only I, Ⅱ and Ⅲ all included Ⅰ and Ⅱ only
enjoys has enjoyed enjoyed had enjoyed
The technological significance of the program. The educational significance of the program. The philosophical significance of the program. The historical significance of the program.
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