1.W=P1.T1+P2.T2=0.65kw×0.25h+0.025kw×5/60h=0.165kw.h=0.165度2.W=P1.T1+P2.T3=0.65kw×0.25h+0.025kw×4h=0.263kw.h=0.263度
0.165度 0.263度