怎样将pdf转换成word

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select * from tbl_Articles WHERE ArticleID=842578 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=842578 LIMIT 0,1
select * from tbl_Articles_sphinx where id=842578 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1857139,2135559,2433772,808900,1338709,2770230,1093679,1660953,2208979,1106002,2710469,2362774,1702535,1125500,706096,200828,340937,1115451,1323748,2891315,1487041,2124128,3188312,2966434,500163,1583281,2509048,852467,748102,1094683) ORDER BY field (ArticleID,1857139,2135559,2433772,808900,1338709,2770230,1093679,1660953,2208979,1106002,2710469,2362774,1702535,1125500,706096,200828,340937,1115451,1323748,2891315,1487041,2124128,3188312,2966434,500163,1583281,2509048,852467,748102,1094683)