简答沉积矿床的分类？
管理信息系统是一个人一机系统。
管理信息系统是一个“人机”合成系统，但计算机并不一定是管理信息系统的必要条件
Your company has a main office and 15 branch offices. The company has a single Active Directory domain. All servers run Windows Server 2008. You need to ensure that the VPN connections between the main office and the branch offices meet the following requirements：All data must be encrypted by using end-to-end encryption. The VPN connection must use computer-level authentication User names and passwords cannot be used for authentication. What should you do？（） Configure an IPsec connection to use tunnel mode and preshared key authentication.。 Configure a PPTP connection to use version 2 of the MS-CHAP v2 authentication.。 Configure a L2TP/IPsec connection to use the EAP-TLS authentication。 Configure a L2TP/IPsec connection to use version 2 of the MS-CHAP v2 authentication.。
流动资金周转速度越快，资金占用量越少。
如果煤矿企业已经按照条例的规定向原安全生产许可证颁发管理机关申请办理延期手续，但由于颁发管理机关的原因，在原安全生产许可证有效期满时还没有作出是否延长其安全生产许可证的有效期的决定，此时（）对企业予以处罚。
