A light-emitting structure includes a p-doped region for injecting holes and an n-doped region for injecting electrons. A first rendering instruction hooking section is set to a first mode to hook a screen rendering instruction issued by a virtual machine application in a virtual machine. A first lever has a first corrugated portion and it pivots with the tray unit according to sliding motion of the side fence. The master site and a remote site then conduct communications therebetween by frequency-hopping andor orthogonal frequency multiplexing among the clear channels using an a priori known PN sequence. A driven roller of the conveying roller pair includes driven runners divided in a rotary shaft center direction, and one driven runner located at one end is inclined in a direction separating from another driven runner so that an outer peripheral surface of the one driven runner is brought into contact with a corner portion of a rubber roller. In particular, the method comprises feeding the gas stream and liquid stream into a first contactor where they are contacted co-currently and subjected to turbulent mixing conditions, and passing the multi-phase flow from the first contactor to a second contactor.