Engine : General Subjects - 1627/1128
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| With a machinery lubricating oil analysis program, it is important to monitor trends over time. What would be indicated by elevated copper levels associated with a recent sample of used diesel engine crankcase lubricating oil? |
| A) Wear of various aluminum-alloy bearings. |
| B) Wear of piston rings. |
| C) Wear of various lead-bronze alloy bearings. |
| D) Wear of various white metal alloy bearings. |
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