我国《节能中长期专项规划》提出,电力工业要大力发展( )万千瓦及以上超(超)临界机组、大型联合循环机组。
A.15
B.30
C.60
D.90
参考答案:C
Mother was worried because little Alice was ill ,especially_____father was away in Franc
A.as
B.that
C.during
D.if
电力线路发生接地故障时,在接地点周围将产生()。
A.接地电压
B.跨步电压
C.短路电压
D.无电压