Final answer:
The number of KC-10 aerial refueling transfer pumps to be used during refueling operations is specified in the aircraft's operating instructions to prevent over-pressurization.
Step-by-step explanation:
The student is asking about the operating limitations of the KC-10 aerial refueling transfer pumps during a refueling operation. While the exact number of pumps that should be used is based on operational procedures and equipment specifications, it is crucial to use an appropriate number of pumps to prevent over-pressurization of the refueling system.
Over-pressurization could result in equipment failure or safety hazards. To ensure safety and efficiency, operators must refer to the specific aircraft maintenance manual or operating instructions, which provide detailed guidelines, including the maximum number of transfer pumps recommended for use during aerial refueling operations.