What is a virtual firewall？（） ["another name for a firewall deployed in routed mode","another name for a firewall deployed in transparent mode","a separation of multiple firewall security contexts on a single firewall","a firewall that， when deployed in routed mode， can support up to 1000 VLANs per context","a firewall that has multiple contexts， all of which share the same policies （such as NAT and ACLs）"]
配置性评价。
为了弥补生产能力不足的缺陷，增加有关装置、设备、工具等长期资产而发生的成本是（）。 ["专属成本","机会成本","沉没成本","付现成本"]
护理道德评价的基本标准有：（）、（）、公正和互助。
在电力线路土工作，不属于保证安全的技术措施的是（）。 ["停电","验电","装设接地线","办理工作票"]
寿命表
