[单选题]同步电动机处于欠励状态时，其功率因数的性质是（ ）？(每题0.5分)（0.5）

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69424' and id < 4495402 and id<>'4495402' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69424' and id > 4495402 and id<>'4495402' order by id asc limit 5