丙酮酸还原为乳酸，提供所需氢的是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30298' and id < 2449832 and id<>'2449832' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30298' and id > 2449832 and id<>'2449832' order by id asc limit 5