The network is being flooded with invalid Layer 2 addresses， causing switch CAM tables to befilled and forcing unicast traffic to be transmitted out all switch ports. Which type of Layer 2 attackis being used here？（） ["MAC spoofing","VLAN hopping","MAC address flooding","DHCP flooding","Session hijacking"]
经济水平的发展能够抑制和消除的犯罪是（） ["白领犯罪","青少年犯罪","集团犯罪","小偷小摸等侵犯财产类犯罪"]
全要素生产率
国外大多数管理学家对目标管理持（） ["否定态度","中立态度","不反对，但不使用","肯定态度"]
产于火山沉积岩中的层状铁矿床
楚歌体
