题目内容
RLC串联电路发生谐振时,电路的功率因数( )。
2024-09-21
A.等于零
B.等于1
C.无法确定
D.等于0.5
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68472' and id < 4420917 and id<>'4420917' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68472' and id > 4420917 and id<>'4420917' order by id asc limit 5