负荷曲线依据。
参考答案:
电力系统中各类电力负荷随时间变化的曲线。是调度电力系统的电力和进行电力系统规划的
Have you ever stopped _____ how our lie _____ if the world ran out of ol?
A.to think, would change
B.thinking, would change
C.to think, will change
D.thinking, should change
自感线圈中自感电动势总是反抗线圈中磁通变化。()