能够提高操作性反应的概率的各种手段、措施叫（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30756' and id < 2476174 and id<>'2476174' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30756' and id > 2476174 and id<>'2476174' order by id asc limit 5