Automobile Engineering in ME
The sequence order of events in a four stroke engine is

Suction compression power exhaust
Suction power compression exhaust
Suction exhaust power compression
Exhaust compression power suction

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Automobile Engineering in ME
The difference between DOT 3 and DOT 4 brake fluids is

DOT 4 fluids have a higher boiling point than DOT 3 fluid
DOT 3 and DOT 4 fluids have the same boiling point, but DOT 4 fluid has a longer service life
DOT 4 fluid is more resistant to freezing than DOT 3 fluid
DOT 4 fluids have a lower boiling point than DOT 3 fluid

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