IGBT驱动电路大多采用集成式电路。( )
参考答案:A
____ he comes to Nanjing he will go to the Eastern Suburb for sightseeing.
A.By the time
B.Sometimes
C.Every time
D.At times
(4)在采用无功补偿电容器时,要求补偿后的功率因数约为0.92,则电容器补偿容量的计算值约为( )。
A.400kvar
B.350kvar
C.300kvar
D.250kvar