10KV三相供电电压允许偏差为额定电压的百分之几？
参考答案：
10KV三相供电电压允许偏差为额定电压的±7%
The cost of renting a house in central Jurong is more than in any other area of the city.
A．that
B．this
C．it
D．one
矿产资源按其内容可分为（）和（）。
