Watt steam engine e pneumatic tube: o que têm em comum

1. Passo 1. Watt steam engine — faz parte de — Steam locomotive. A steam locomotive is driven by a steam engine.
2. Passo 2. Steam locomotive — é utilizado em — Postal service. Mail trains.
3. Passo 3. Postal service — inclui — Pneumatic tube. The post.

Abrir Evothings