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？
教育评价
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"]
督办工作未落实，造成影响和后果，属于（）问题。 ["红线","A1","A2","B"]
什么叫高温形变淬火？
