根据《电子信息系统机房设计规范GB50174—2008》，下面的电子信息机房的设计方案不妥当的是 （ ）
- A.主机房净高根据机柜高度及通风要求确定，设置为3.0m
- B.主机房采用了耐火等级为二级的建筑材料
- C.主机方用于搬运设备的通道净宽设为2.0m
- D.B级电子信息系统机房的主机房中设置了两个外窗
正确答案及解析
正确答案
解析
根据《电子信息系统机房设计规范GB50174—2008》这个国标的规定：6.4.6 A级B级电子信息系统机房的主机房不宜设置外窗。当主机房设有外窗时，应采用双层固定窗，并应有良好的气密性，不间断电源系统的电池室设有外窗时，应避免阳光直射。
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