题目内容
P=
UIcosφ中角度的意义( )。(2.0)
2025-11-26
A.相电压和相电流的相位差角
B.功率因数角
C.线电压和线电流的相位差角
D.阻抗角
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69414' and id < 4494334 and id<>'4494334' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69414' and id > 4494334 and id<>'4494334' order by id asc limit 5