A fuel cell system includes a circulatory device and a fuel cell module. Each gaming venue, operated by different entities, provides gaming activities on a respective website. By effectively changing the length of the wheelbase of the in-line skate when the in-line skate is at a certain angle from the vertical, a tighter turning radius may be achieved. If the second temperature is greater than the higher end-point temperature of the predefined range, the second predefined level is defined to be less than the first predefined level.