发电机横差保护回路所流过的不平衡电流是什么原因造成的?
参考答案:
1.发电机电动势波形畸变,在定子绕组中所产生的三次谐波电流
2.发电机的各相电动势不对称所产生的零序电流
Not only _____ great thoughts but also they express their thoughts in words which powerfully influence our minds and emotions.
A.did great writers have
B.great writers had
C.great writers have
D.do great writers have
文化创意与传播学院教科研成果突出。出版专著()部,主编和参编教材()部,公开发表学术论文二类及以上近30篇,主持省级哲学社会科学规划项目3项,厅级社科项目、质量工程项目()余项。