改革开放以来我们取得一切成绩和进步的根本原因，归结起来就是（ ）。A、开辟了中国特色社会主义道路B、形成了中国特色社会主义理论体系C、发展了中国特色社会主义文化D、确立了中国特色社会主义制度

单项选择题____全过程掌握作业者作业期间的情况，保证在有限空间外持续监护，与作业者进行有效的操作作业、报警、撤离等信息沟通。

单项选择题Your network consists of a single Active Directory domain. The domain contains a server namedServer1 that runs Windows Server 2003 Service Pack 2 (SP2).Your company’s security policy states that domain users must be prevented from logging on to Server1 ifa domain controller is unavailablE.You disconnect Server1 from the network and discover that you can log on to Server1.You need to configure Server1 to comply with the company’s security policy.What should you do on Server1?（）A.From the local security policy, modify the Security Options.B.From the local security policy, modify the User Rights Assignment.C.From Active Directory Users and Computers, modify the properties of the Server1 account.D.From Active Directory Users and Computers, modify the properties of the Domain Computers group.