A passivation layer for a heterojunction bipolar transistor is formed from a relatively high bandgap material that is lattice-matched to the HBT components it passivates. Such colorful playhouse is made from plastic materials with snap in feature for easy resembling. In this way, upon replenishing a plurality of cleaning members of a bearer cleaning apparatus with a cleaning solution, it becomes possible to replenish the plurality of cleaning members with the cleaning solution from a single location in an extremely simple manner. In addition to this the central dryer for electron beam curing also has a web guiding system which feeds the web successively but not necessarily in direct succession, to the first application unit, the first electron beam generator, the second electron beam generator. The method requires determining whether a down-shift signal is inputted in a state when a gear shift mode is a sports mode and a throttle valve opening angle is within a predetermined range, and performing duty control until a transmission control outputs a down-shift start signal to a transmission when it is determined that the down-shift signal is inputted.