微机组装完成，加电开机后发现系统时间不对，经调试关机后重启还是不对，最可能的原因是（）。 系统不正常。 内存故障。 CPU工作不良。 主板CMOS的电池失效。
试简述永磁同步直驱式风力发电机组的特点及工作原理。
An enterprise has plans to start adding IPv6 support. The initial deployment requires support from some IPv6 - only device s that need to access servers that support only IPv4. Which of the following tools would be most appropriate?（） Native IPv6。 Point - to -point tunnels。 Multipoint tunnels。 NAT - PT。
下列哪一个旅游区是国家AAAA级旅游区（）。 诺水河。 石海洞乡。 邛海。 广汉三星堆博物馆。
You have a VPN server that runs Windows Server 2003 Service Pack 2 (SP2). The VPN server is configured to have a static IP address pool. The IP address range is 10.10.10.1 to 10.10.10.200. All clients connect to the server by using PPTP. You discover that the VPN server supports only five concurrent VPN connections. You need to ensure that the VPN server supports 100 concurrent VPN connections. What should you do?（） From Network Interfaces， create a new demand-dial interface.。 From the properties of the server， disable multilink connections.。 From the port properties， configure the WAN Miniport （PPTP） device.。 From the properties of the server， configure the IP address assignment settings.。
数据库系统的主要组成对象一般不包括（）。
