Automobile Engineering in ME
The purpose of a cylinder head gasket is to

Removes impurities from cylinder head lubricating oil
Prevent the combustion gases from leaking from the joint between the cylinder block and the cylinder head
None of these
Prevent engine oil from going into combustion chamber

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Automobile Engineering in ME
The main feature of Macpherson strut suspension is that

The vertical size of the suspension can be made more compact
The assembly is slightly more complicated in design
The unsprung mass in lighter
Non vertical external forces are supported by the suspension arms

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