Carburador e saw: o que têm em comum

1. Passo 1. Carburador — faz parte de — Internal combustion engine. Petrol engines mixed fuel and air in a carburettor until the 1980s–90s; modern engines use fuel injection instead.
2. Passo 2. Internal combustion engine — faz parte de — Motosserra. A two-stroke engine.
3. Passo 3. Motosserra — evoluiu de — Saw. A mechanized saw.

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