Launch complex e typewriter: o que têm em comum

1. Passo 1. Launch complex — utiliza — Rocket. Launching rockets.
2. Passo 2. Rocket — é feito de — Paper. The first rockets were paper tubes filled with gunpowder.
3. Passo 3. Paper — é utilizado em — Gutenberg printing press. The impression is made on paper.
4. Passo 4. Gutenberg printing press — tem como parte — Movable type. Text is set from metal type.
5. Passo 5. Movable type — funciona como — Typewriter. Each typebar carries a piece of movable type pressed against the paper.

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