A bearing arrangement includes a bearing outer element that defines a first plurality of races opening radially inwardly, a bearing inner element that defines a second plurality of races opening radially outwardly, and a bearing middle element defining a third plurality of races at its radially outer surface thereof and a fourth plurality of races at its radially inner surface thereof. A kicker is integrated with a perimeter of the wide end of the flexible vane wherein the kicker includes a concave portion extending tangentially from the flexible vane. Consequently, when the second electric motor rotation speed is relatively high, the engine upper limit rotation speed can be lowered, and the second electric motor increasing possible rotation speed can be altered to a lower level for suppressing an increase in rotation speed of a second electric motor. To interconnect the drain assembly to a bathtub, the second end of the drain pipe is inserted through a drain port of the tub until the annular flange abuts a bottom wall of the tub. One of the subsets of pixels is chosen based on the determined variation statistic values. By this means it is made possible to secure a large number of users without code resource shortages even where adaptive array antenna is applied to a shared channel.