A twist amount is calculated based on an angular velocity around a Z-axis of an input device when a player performs a shoot operation. The apparatus provides a parallel coupling for securely interlocking the outside surfaces of parallel frame members together in a side to side arrangement to form an array with improved structural load distribution. Based on this map and the two temperature values received from the first and second temperature sensors, respectively, the inputoutput control unit determines the target values of the respective input powers of the first and second batteries. The valve assembly further has reinforcement collars installed between the inner peripheral surface of the valve shaft hole and the outer peripheral surfaces of the heat-resistant filters. At least one of X3 and X4 is a sulfur atom.