关于施工现场环境噪声污染防治的说法，正确的是（）。 ["A.国家对环境噪声污染严重的落后设备实行淘汰制度 ","B.土石方施工阶段，噪声限值是昼间70分贝，夜间55分贝 ","C.打桩施工阶段，噪声限值是昼间80分贝，夜间禁止施工 ","D.在城市市区噪声敏感建筑物集中区域内，禁止夜间进行任何产生环境噪声污染的建筑施工作业"]
在FTP站点属性对话框的“目录安全性”选项卡中，对IP地址的访问控制方式有（） ["2种","4种","6种","8种"]
单位工程施工组织设计的编制依据包括（）。 ["建设地区基础资料","建设单位的意图和要求","资源配置情况","工程的施工图纸及标准图","地质、气象资料"]
磁滞损耗
You have a VPN server that runs Windows Server 2003 Service Pack 2 （SP2）. The VPN server supports only PPTP connections. A firewall protects the VPN server from the Internet. From a remote computer connected to the Internet， you attempt to connect to the VPN server. During the connection attempt， you receive a message that your user name and password are being verified. You then receive the following error message： “Error 721： The remote computer is not responding.”You need to ensure that you can establish a VPN connection to the VPN server from the Internet. What should you do？（） ["On the VPN server， enable LAN routing.","On the VPN server， create a demand-dial interface.","On the firewall， allow inbound connections that use TCP port 1701.","On the firewall， allow inbound connections that use Generic Route Encapsulation （GRE） protocol 47."]
电石
