用二分法求方程的近似根，精确度为 ，则当型循环结构的终止条件是 (   )

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='22440' and id < 1979591 and id<>'1979591' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='22440' and id > 1979591 and id<>'1979591' order by id asc limit 5