Internal Combustion Engines
Diesel fuel, compared to petrol is

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

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Internal Combustion Engines
The purpose of testing an internal combustion engine is

All of these
To satisfy the customer regarding the performance of the engine
To determine the information, which cannot be obtained by calculations
To conform the data used in design, the validity of which may be doubtful

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