Fuse and internal combustion engine: what they have in common

1. Step 1. Fuse — is made of — Porcelain. The body is porcelain.
2. Step 2. Porcelain — is material for — Spark plug. The insulator is ceramic.
3. Step 3. Spark plug — is part of — Internal combustion engine. A petrol engine ignites the mixture with a spark plug.

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