How do hydraulic systems make work easier for us?

What is overflow and underflow in queue? How would you use strain in a sentence? What has the author C N Vakil written? What is 20 mm mild steel square hollow pipe 14 gauge standard weight? Who rebuilds variable control relay modules? Who invented 5s system? Which field of engineering focuses on construction such as dams roads and buildings? How do you build a cooler? What are the positives and negatives of desalination? How do you share a load in a red mobile? How do you change hinges on a soft close toilet seat? What were some early uses of steam power? What major invention happened in 1940? How do you get 277 volts from a 480 volt line? How long does it take to install pella windows? Who would work with electromagnets scientists or engineers? What is problem for if transformer voltage regulation iis high? How much water does a 20 year old toilet use per flush? What are examples of when you would use a Crow Bar and when you would use a Flat Pry Bar? Can you still use a water heater and furnace if there is no drip line?