函数 在区间[0，2π]上的零点个数为

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='13514' and id < 1097750 and id<>'1097750' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='13514' and id > 1097750 and id<>'1097750' order by id asc limit 5