变压器运行时,若负载功率因数从 0.8(感性)提高到 0.95(感性),其他条件不变,则其效率( )?(0.5)
发布时间:2025-11-26
A.提高
B.降低
C.不变
D.无法确定
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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69414' and id < 4494293 and id<>'4494293' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69414' and id > 4494293 and id<>'4494293' order by id asc limit 5
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