为什么宽带信号很不稳定

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select * from tbl_Articles WHERE ArticleID=207147 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=207147 LIMIT 0,1
select * from tbl_Articles_sphinx where id=207147 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1130118,337906,1087713,1057118,1303746,384622,1085116,1099143,849733,1041761,512293,2626000,1128667,1111004,129777,165364,315304,1096647,1108141,642524,1118993,1095063,1128924,1986260,263479,1068034,1128047,1108704,1083208,1356022) ORDER BY field (ArticleID,1130118,337906,1087713,1057118,1303746,384622,1085116,1099143,849733,1041761,512293,2626000,1128667,1111004,129777,165364,315304,1096647,1108141,642524,1118993,1095063,1128924,1986260,263479,1068034,1128047,1108704,1083208,1356022)