A condition of impaired speed and torque control of a parallel electrically variable transmission due to factors beyond nominal modeling and estimation errors is diagnosed under low speed operation. The hose connection comprises a pipe for transporting fuel from a fuel reservoir, a hose for transporting fuel to a motor vehicle, an intermediate member adapted to connect said hose with said pipe, and a locking device fixed to said fuel dispensing unit adapted to interlock said pipe and said intermediate member. The vessel is capable of reconfiguring between these hull forms while underway. The discharge power supply apparatus includes an inverter circuit 2 that converts D.