A method for selecting a service provider for a service, which can be received by a mobile station via a radio access network and which is provided by at least two service providers, as well as to a corresponding selecting device are shown. In this way the knife may be easily extracted using only one hand. The left inner side of the bottom housing provides a synchronize electric motor, a power supply connecting apparatus and the gear transmission system connected to the output axle of synchronize electric motor. A body is attached to the base and at least one electrical plug portion engages an electrical receptacle portion of the other sub-assembly so that the sub-assemblies when secured together are electrically connected. Column decoders decode a column address in response to a \u201cread\u201d command and for reading data from the cache in accordance with the decoded column address.