根据国家测量规范规定，二等三角网最弱边边长相对中误差不超过（）
A. 1/20万
B. 1/12万
C. 1/7万
D. 1/4万
查看答案
Your company has an Active Directory forest that has five domains. All DNS servers are domain controllers.You need to ensure that users from all domains are able to access a Web server named App1 by browsing to http：//App1. What should you do？（）
A. Configure and enable DFS Replication on the App1 Web server.
B. Create a host （AAAA） record for the App1 Web server in the DNS zone for the forest root domain.
Create a zone named GlobalNames on a DNS server. Replicate the GlobalNames zone to all domain controllers in the forest. Create a host （A） record for the App1 Web server in the zone.
D. Create a zone named LegacyWINS on a DNS server. Replicate the LegacyWINS zone to all domain controllers in the forest. Create a host （A） record for the App1 Web server in the zone.
煤贮存时间过长，就会产生煤氧化变质而影响炼焦。
A. 正确
B. 错误
闭式供水系统，根据循环水冷却设备的不同分为哪三种类型？
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