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The bottom of the Apollo command module was a big heat shield. How did the wires and hoses pass through it from the service module? - Quora
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NASA Apollo CM Command Module Hatch with Detail at Kennedy Space Center Stock Image - Image of astronauts, nasa: 186591867
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Siemens 6ES7 241-1CH32-0XB0 SIMATIC S7-1200, Communication Module cm 1241, RS422/485, 9 PIN SUB D (Female) Supports Message Based Freeport: Amazon.com: Industrial & Scientific
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