What are some examples of fluid technology?

I need to know some examples of fluid technology - at least 10 - for a school project. I had a sheet with examples but we haven't had school for the last two days and it's in my locker.

Somebody help?
I searched all the major search engines and I just got company names and things like that. I know that one example would be hydraulic brakes.

there is a long list:
http://search.yahoo.com/search?p=fluid+technology&fr=ush-ans

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