恒无功功率调节
参考答案:
以维持发电机无功功率为设定值作为控制目标的励磁调节器控制方式。
It's said that he will ______ his uncle's business when he is mature(成熟的) enough to deal with
public relations.[ ]
A. take over
B. think over
C. hand over
D. go over
根据《GB50374-2006通信管道工程施工及验收规范》通信管道工程宜使用自来水或()。
A.洁净的天然水
B.工业废水
C.污水
D.海水