防火墙的功能表现在()、()、()和()四个方面。
因铁路、公路、水上和航空事故请求损害赔偿提起的诉讼由()。 ["事故发生地人民法院管辖","车辆、船舶最先到达地人民法院管辖","航空器最先降落地人民法院管辖","原告住所地人民法院管辖"]
管理信息系统既是一个社会系统,又是一个()。 ["管理系统","计算机系统","人工系统","技术系统"]
按照建设程序,定额可分为?
On router R1, which three of the following protocols will be forwarded to a host specified by the "iphelper-address" interface configuration command if the configuration has not been modified by the"ip forward-protocol udp" global configuration command?() ["BOOTP","TFTP","ARP","DNS","proxy-ARP","FTP","CDP"]
模块所具有的三个基本属性是什么?各自的含义如何?