单项选择题如图所示为某办公室的电气照明平面图，所有线路均为BV=2.5电线穿管径20mm的电线管暗敷设。仔细阅读，画出房间配电箱AL的系统图。
问答题In treatment practices of TCM, (1) has been listed as the Intangible Cultural Heritage of Humanity by UNESCO.
