Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
ジェットエンジンで、軸受部での冷却と潤滑を終えた潤滑油を滑油タンクに戻す系統で、潤滑油を滑油タンクに戻すのは？

### Response:

排油ポンプ