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9 March, 02:04

Technician A says that the oil control ring scrapes oil off the cylinder wall with each downward piston stroke. Technician B says that a typical oil control ring consists of two separate pieces. Who is right? A. Neither Technician A nor B B. Both Technicians A and B C. Technician B only D. Technician A only

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  1. 9 March, 05:11
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    It is correct that the oil control ring scrapes oil off the cylinder wall with each downward piston stroke. Of course, the repetitive upward and downward motion remove some of the mass in the ring. The second is still true as a multipiece oil ring is composed of two parts for oil control. Answer is B
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