A turbine unit of a turbocompressor comprises a turbine wheel having blades and a flow channel for directing exhaust gas onto the turbine wheel. Provided the protrusions are spaced apart a distance X and have a length L, those protrusions satisfying LX5L account for at least 60% of the entire protrusions. The flexible printed circuit is bonded under the upper layer substrate. The purchasing and selling of the synthetic interest rate swap occurs at a frequency to minimize effects of shortening terms on the index. The steering intervention by the additional required actuating torque may be made significantly more comfortable if the gradient of the actuating torque is limited to a maximum value.