Open-hearth furnace and electric generator: what they have in common

1. Step 1. Open-hearth furnace — is made of — Brick. An open-hearth furnace is built of firebrick.
2. Step 2. Brick — is material for — Power station. The buildings of the first power stations were brick.
3. Step 3. Power station — has part — Electric generator. Generators produce the current.

Open Evothings