若点P（a+5，a﹣3）在x轴上，则P点的坐标为 _________
（8，0）
I won't go there. It's late now. _____, it is raining so hard. [ ]
A. That's
B. What's more
C. However
D. So
电力线路的电能损耗是：单位时间内线路损耗的有功功率和无功功率的平均值。（）
