Described herein are methods and compositions that can be used for diagnosis and treatment of cancer. Each pole of each stator element is secured to a pole of an adjacent stator element by a bridge formed of a non-magnetic material molded onto the poles. If the progress rate appears degraded, the background task is suspended for a computed time interval so as to back off from its interference with a foreground process. At least one rotor responds to lateral movements of one or both steering levers by tilting in an arc perpendicular to the biaxial plane, moving the trowel left or right. By the present invention, it is possible to prevent a noise from being produced due to the increase of a clearance caused when a vehicle loses the driving durability thereof to a certain degree and hence a support yoke of the vehicle is worn, or due to an impact reversely input from a road surface, and hence to provide a pleasant steering feeling for a driver when steering the vehicle. The curative has less than 5 equivalent percent total amino and hydroxyl groups having an equivalent weight greater than about 200.