什么是有功功率无功功率

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select * from tbl_Articles WHERE ArticleID=129157 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=129157 LIMIT 0,1
select * from tbl_Articles_sphinx where id=129157 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1102466,1080441,1049170,1091645,1088546,1106960,1086928,1054674,1111930,1117738,1072721,1067241,1063619,1111948,1091900,1085318,1050301,1072809,1080118,1065107,1063191,1063805,1100115,1057028,1116287,1055341,1111130,1114914,1062494,1067880) ORDER BY field (ArticleID,1102466,1080441,1049170,1091645,1088546,1106960,1086928,1054674,1111930,1117738,1072721,1067241,1063619,1111948,1091900,1085318,1050301,1072809,1080118,1065107,1063191,1063805,1100115,1057028,1116287,1055341,1111130,1114914,1062494,1067880)