Distillation and refrigerator: what they have in common

1. Step 1. Distillation — is used in — Kerosene. Obtained by distillation.
2. Step 2. Kerosene — is used in — Turbojet engine. Jet fuel is kerosene.
3. Step 3. Turbojet engine — has part — Compressor. The compressor compresses the air.
4. Step 4. Compressor — is part of — Refrigerator. A compressor with an electric motor.

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