What components are housed in the motor drive pit of a type-H support system?

The motor drive pit of a type-H support system specifically contains crucial components that enable the operation and control of hydraulic systems. The correct choice details the inclusion of a hydraulic power unit, which generates the hydraulic pressure necessary for operation, and a sump pump, which is essential for managing any excess fluid that may accumulate. Additionally, the electrical panel facilitates the necessary electrical connections and controls for the system, while heating resistors help maintain the fluid at optimal temperatures to ensure efficient functioning.

The other options, while they mention components important to various systems, do not encapsulate the specific setup found in the motor drive pit of a type-H support system as accurately. Components such as hydraulic fluid and pumps are necessary for hydraulic systems in general, but they do not provide the comprehensive overview of all the integral components that work together in this specific setup as outlined in the correct choice.