三相发电机的电流如何计算?
参考答案:
I=P/(√3Ucosφ)即电流=功率(瓦)/(√3×400(伏)×0.8).简算公式为:IA.=机组额定功率(KW)×1.8
In order to find the missing boy, the young couple all they can over the past twenty-four hours.
A.do
B.did
C.have been doing
D.had done
焦炉炉顶余煤,不允许埋住()和拉条。