Your company has a single Active Directory domain named intranet.contoso.com. All domain controllers run Windows Server 2008. The domain functional level and the forest functional level are set to Windows 2000 native mode. You need to ensure the UPN suffix for contoso.com is available for user accounts. What should you do first（） ["Raise the contoso.com forest functional level to Windows Server 2003 or Windows Server 2008.","Raise the contoso.com domain functional level to Windows Server 2003 or Windows Server 2008.","Add the new UPN suffix to the forest.","Change the Primary DNS Suffix option in the Default Domain Controllers Group Policy Object （GPO） to contoso.com."]
结构化开发方法是一种开发管理信息系统较为成熟的方法，下列选项中，不具有该方法所具有的特征是（）。 ["充分理解用户需求","自顶向下进行开发","动态地定义系统功能","完整的文档资料"]
下列不属于偿债能力比率的是（）。 ["流动比率","利息保障倍数","现金比率","市盈率"]
如果产权比率为50%，则资产负债率为（）。 ["42.86%","40%","33.33%","28.57%"]
设备在整个寿命期内的故障变化规律，可分为如下哪些阶段：（） ["设备事故的初发期","设备事故的偶发期","设备事故的频发期","设备事故的结束期","设备事故的萌芽期"]
无功功率和有功功率有什么区别？
