A hitch control system for a work vehicle combines a front suspension position signal, a hitch load signal and a hitch position signal to generate a valve command signal that controls hitch position so as to alleviate pitching and maximize front wheel ground contact time. The use of such compounds and compositions in the treatment of cancer is also described. The docking electrode, the walking mechanism and the control unit are disposed in the body of the intelligent robot. An image is formed at the transfer body.