CSAG40-21400W,WTsteelplate/sheet(http:\/\/.ice-steels\/steel-plate-sheet\/CSA-G4021-400-W-WT-steel.html)forHighYieldSteel Keywords:400W,WTsteelplate/sheet(http:\/\/.ice-steels\/steel-plate-sheet\/CSA-G4021-400-...
（1）电功率的单位是瓦特，简称瓦，符号是W，定义式是P=Wt；（2）电视机一个月消耗的电能：W=Pt=400×10-3kW×3h×30=36kW?h．故答案为：瓦特；P=Wt；36