Solve the system by elimination. 
Definitions:
Economic Value
A measure of the benefit provided by a good or service to an economic agent, often quantified in terms of willingness to pay or the amount of resources saved.
Preventive Maintenance
Routine maintenance and inspections carried out to prevent equipment failures before they occur, ensuring operational efficiency.
Injection Mold
A manufacturing process for producing parts by injecting material into a mold.
Drill Press
A machine tool used for drilling holes in various materials, where the drill is pressed into the workpiece by a motor-driven or manual lever.
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