The function of a second ring is that it is a$? – McqOptions

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1.	The function of a second ring is that it is a$?
A.	Back up compression ring which will work in place of the top ring when it is broken
B.	Compression ring and aids the top ring in sealing and cooling
C.	Back up oil control ring which will work in place of the bottom ring when it is broken
D.	Cushion ring which prevents piston slap and knock
Answer» C. Back up oil control ring which will work in place of the bottom ring when it is broken

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