Automobile Engineering in ME
The ball joints are used on the tie rod ends, because they

Reduce the amount of noise generated
Reduce the amount of sliding resistance
Improve the force transmission speed
Can deal with movement of the suspension both vertically and in other directions

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

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

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