A power plant comprises a combustion chamber, in which combustion of a combustible matierla is intented to take place while forming hot combustion gases, a gas turbine device which is arranged to be driven by the combustion gases, and a topping combustor which is arranged to receive the combustion gases and increase a temperature thereof to a level suitable for the gas turbine device. The sensor is adapted to detect a light absorption of arterial blood at the prescribed position. The displayed information includes the number of batteries received in the charger, as well as their size, goodbad state, and state of charge. A handle is pivotally attached at the midpoint of the connector bar. The call processing is performed using the session information for the corresponding terminal stored in the private pDLR in when the call connection is requested from the terminal entering the private network at least two or more times. The metallic porous member has granular portions and narrow portions and includes a structure, in which the granular portions are connected with each other through the narrow portion.