. "Various signals are supplied to the electronic control apparatus 60 from the sensors and switches shown in FIG. 3, such as a signal that expresses an engine water temperature TEMPW, a signal that expresses a shift position PSH, a signal that expresses a revolution speed NM1 of the first electric motor M1 (referred to below as a ???first electric motor revolution speed NM1???), a signal that expres" . . .