Internal Combustion Engines
Diesel fuel, compared to petrol is

Highly ignitable
Just about the same difficult to ignite
Less difficult to ignite
More difficult to ignite

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Internal Combustion Engines
A hydraulic ram is a device used to

Store the energy of water
To lift water from deep wells
Increase the pressure of water
To lift small quantity of water to a greater height when a large quantity of water is available at a smaller height

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