Which of the following is a type of maintenance strategy?

Preventive maintenance and corrective maintenance are key strategies in equipment maintenance. Preventive maintenance involves performing regular, scheduled maintenance on equipment to prevent potential failures and extend the life of the equipment. This proactive approach can include tasks such as lubrication, adjustments, and parts replacements based on the manufacturer's recommendations or historical data.

Corrective maintenance, on the other hand, is performed after a problem is identified. This type of maintenance is reactive and addresses specific failures or malfunctions to restore equipment to its operational state. Understanding and effectively implementing both preventive and corrective maintenance is fundamental in maintaining equipment reliability and minimizing downtime.

The other choices, while they mention maintenance concepts, do not accurately describe established maintenance strategies in the same way. For example, predictive marketing does not relate to equipment maintenance, and scheduled maintenance and emergency repairs do not cover the broad spectrum of maintenance strategies like preventive and corrective does. Thus, recognizing the significance of preventive and corrective maintenance helps in ensuring more efficient equipment operation and management.