Bread and heat pump: what they have in common

1. Step 1. Bread — uses — Bread machine. Baking at home.
2. Step 2. Bread machine — has part — Heating element. A heater.
3. Step 3. Heating element — is part of — Tumble dryer. A heater.
4. Step 4. Tumble dryer — has part — Heat pump. Heat-pump models.

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