Automobile Engineering in ME
The condition that results in large quantities of CO emission is

Insufficient air during combustion
Low temperature combustion
High temperature combustion
Insufficient fuel during combustion

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Automobile Engineering in ME
The function of an oil control orifice is that it

Turns oil into fine mist for spray lubrication
Returns cylinder head lubricating oil to the oil pan at high speed
Regulates the pressure of engine oil supplied by the oil pump for the lubrication of cylinder head mechanism and other purposes
Removes impurities from cylinder head lubricating oil

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