Which of the following equipment requires specific training to operate safely?

Heavy machinery or power tools require specific training to operate safely because they involve higher levels of risk and complexity compared to other types of equipment. These machines often have powerful engines or intricate moving parts that can cause severe injuries if mishandled. Proper training ensures that operators understand the operational procedures, safety protocols, and emergency measures associated with the equipment.

In contrast, equipment such as office computers, basic hand tools, and standard photocopiers typically have lower risks associated with their operation. While it's beneficial to have familiarity with these items, formal training is usually not mandated for safe operation, as they do not pose the same potential hazards found in heavy machinery or power tools.