Internet 的接入方式有两种：（）方式和（）方式。
试述水轮机扩修的主要项目：
如何阻断乙型肝炎病毒的母婴传播？
Your company has an Active Directory domain named contoso.com. The company network has two DNS servers named DNS1 and DNS2. The DNS servers are configured as shown in the following table. Domain users， who are configured to use DNS2 as the preferred DNS server， are unable to connect to Internet Web sites. You need to enable Internet name resolution for all client computers. What should you do（） ["Create a copy of the .（root） zone on DNS1.","Update the list of root hints servers on DNS2.","Update the Cache.dns file on DNS2 Configure conditional forwarding on DNS1.","Delete the .（root） zone from DNS2. Configure conditional forwarding on DNS2."]
简述酶的生产方法
浅析窦娥的节烈和孝道。
