Search Engines.
this : wwwyoutubecom/watch?v equals PCfiqY05BpA thnks guys :)
olympic
The forward propulsion of an aircraft is called thrust.The thrust is given by the engines.
metasearch engines
Metasearch Engines
They are called steam trains because they are pulled by steam engines.
WHAT IS THIS SIGN? Here is the video for it: http://wwwyoutubecom/watch?v equals x-S-eeInJVk
Search engines are essentially algorithmically driven computer systems that reach out to the billions of websites on the Internet (called crawling) which is then stored for later use when someone runs a search. Popular examples include Google, Yahoo, Bing, and others. Directories are listings of websites, often by category, with information that is harvested by humans. The largest example of a directory is DMOZ. While searching directories can be a more arduous process than using search engines, they provide a high amount of relevance to those looking for information since the human component ensures that the listings are of great value.
I posted the list of search engines from wikipedia in the related links box below.
one engien takes gas and one takes diesael
Stokers or boiler tenders, they tend the boilers, not the engines which run on steam.