水泥密度试验以两次试验结果的平均值确定，精确至1kg/m3。
拗体律诗
叙述网络管理的功能。
You develop a Windows Communication Foundation (WCF) service that interacts with Microsoft Message Queuing (MSMQ). The service requires sessions. You need to create a custom binding that enables messages sent to the queue to be viewed when you are using a listener tool. Which binding elements should you use?（） [" textMessageEncoding and msmqTransport in this order."," textMessageEncoding and msmqIntegrationTransport in this order."," msmqTransport and textMessageEncoding in this order."," msmqIntegrationTransport and textMessageEncoding in this order."]
Your company has an Active Directory domain named ad.contoso.com. The domain has two domain controllers named DC1 and DC2. Both domain controllers have the DNS Server server role installed. You install a new DNS server named DNS1.contoso.com on the perimeter network. You configure DC1 to forward all unresolved name requests to DNS1.contoso.com. You discover that the DNS forwarding option is unavailable on DC2. You need to configure DNS forwarding on the DC2 server to point to the DNS1.contoso.com server. Which two actions should you perform（） ["Clear the DNS cache on DC2.","Delete the Root zone on DC2.","Configure conditional forwarding on DC2.","Configure the Listen On address on DC2."]
简述围岩条件影响伟晶岩矿床的主要表现？
