【名词&注释】
食品企业(food enterprises)、本职工作(appointed task)、学历证书(academic certificate)、实施细则(implementing regulations)、设计规范(design code)、允许浓度(allowable concentration)、健康合格证、体检合格证(certification of fitness)、工业企业设计(industrial enterprises design)、公共场所卫生管理条例
[单选题]公共场所内甲醛的允许浓度为()
A. <=0.05mg/m3
B. <=0.1mg/m3
C. <=0.15mg/m3
D. <=0.3mg/m3
E. <=0.5mg/m3