某工程采购的一批钢材的出厂价为3 980元/吨，运费为50元/吨，运输损耗率为0.5%，采购保管费率为2%，则该批钢材的材料单价为（ ）元/吨。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='26340' and id < 2202472 and id<>'2202472' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26340' and id > 2202472 and id<>'2202472' order by id asc limit 5