简述不良资产产生的主要原因。
Your network consists of a single Active Directory domain.You implement a new subnet. On the new subnet, you install a new DHCP server that runs Windows Server 2003 Service Pack 2 (SP2). You create a scope for the 192.168.10.0/24 network ID.You connect a new client computer named Client1 to the subnet. Client1 runs Windows XP Professional Service Pack 3 (SP3).You discover that Client1 has an IP address of 169.254.10.22 and is configured to receive IP configurations automatically.You need to ensure that Client1 receives an IP configuration from Server1. What should you do?（） Activate the DHCP scope. 。 Create a reservation for Client1. 。 Enable BOOTP forwarding on the router. 。 Configure a DHCP Relay Agent on the subnet.。
技术性收入审计常用的实质性程序不包括（）。 获取高新技术产品（服务）收入明细表。 实质性分析程序。 检查技术性收入的确认方法是否与财务报表所采用的收入确认方法相一致。 询问、观察、检查、穿行测试和重新执行。
比较软骨鱼类和硬骨鱼类鳃的结构。
Which three of the following steps are mandatory when configuring MPLS on Cisco IOS? （）(Choose three.) start LDP。 enable CEF switching。 configure the MPLS ID。 disable IP TTL propagation。 configure conditional label advertising。 enable label switching on frame mode interface。
通常在烘筒的一端封头上加设有（）是为了防止烘筒内部形成真空状态
