Nuclear reactor and freezer: what they have in common

1. Step 1. Nuclear reactor — is part of — Nuclear power plant. The reactor heats the coolant.
2. Step 2. Nuclear power plant — has part — Electric generator. Generators.
3. Step 3. Electric generator — is part of — Diesel locomotive. The generator powers the traction motors.
4. Step 4. Diesel locomotive — has part — Air brake. Air brakes.
5. Step 5. Air brake — has part — Compressor. A compressor pumps the air.
6. Step 6. Compressor — is part of — Freezer. A compressor compresses the refrigerant.

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