1000W：= 100*0.15% + 400*0.075% + 500*0.06% = 0.75500W:= 100*0.15% + 400*0.075% = 0.456000W:= 100*0.15% + 400*0.075% + 500*0.06% + 4000*0.024% + 1000*0.009% = 1.8
