| 21. | In Britain rebreather use for civilians was negligible the cave sumps.
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| 22. | Engine lubrication is via a dry-sump oiling system.
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| 23. | A new flat sump was created, and the oil pumps changed.
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| 24. | European GTB models retained the dry sump lubrication until 1981.
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| 25. | Competition cars used dry sump lubrication and eventually Kugelfischer mechanical fuel injection.
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| 26. | A sump can also be found heaters and protein skimmers.
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| 27. | A diving snorkel can have a sump section located below the mouthpiece.
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| 28. | Past the lake lie several sumps which must be passed through diving.
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| 29. | The O-320 uses a conventional wet sump system for lubrication.
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| 30. | Grey water disposal is in a ground sump next to the hut.
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