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１９９８～ １９９９年，对怀柔县 ２６所集体与个体办的幼儿园消毒工作质量进行了检测。以室内空气细菌总数＜２５００ ｃｆｕ／ ｍ３；物体表面细菌总数＜８ ｃｆｕ／ｃｍ２，食、饮具与人员手表面者＜５ ｃｆｕ／ ｃｍ２，并不得检出大肠菌群为合格。 所检测幼儿园的床位数?
From 1998 to 1999, the quality of kindergarten disinfection conducted by 26 collectives and individuals in Huairou County was tested. The total number of bacteria in indoor air <2500 cfu / m3; the total number of bacteria on the surface of the object <8 cfu / cm2, food and beverage equipment and the surface of the hand <5 cfu / cm2, and coliform shall not be detected as qualified. The number of beds detected kindergarten?