脚手架主要是为（）的作业、建筑或安装材料的堆放以及短距离水平运输提供一个高处工作面。 ["施工人员","管理人员","技术人员"]
库房内物品与照明灯具间距少于0.5米；电灯未按规定瓦数使用、未使用防护罩，属于（）问题。 ["红线","A1","A2","B"]
什么叫物理气相沉积，有何优缺点？
什么叫低温形变淬火？
Which command can be used from a PC to verify the connectivity between hosts that connect through a switch in the same LAN?（） ["ping address","tracert address","traceroute address","arp addre"]
公共教育经费
