以一根轴线为基准,在轴线的两侧进行造型因素的对称构成,称为()。
A. 回转对称
B. 左右对称
C. 多轴对称
D. 上下对称
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在一定温度下,每立方米空气中所能容纳的水汽量的最大限度称为()。
A. 绝对湿度
B. 饱和湿度
C. 相对湿度
D. 露点
下列工作需要对侧线路接地的是()
A. 110kV线路侧刀闸检修
B. 主变变高套管检修
C. 110kV母线检修
D. 110kV母线侧刀闸检修
You work in a company which is named Wiikigo Corp. The company uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance. On two cluster-ready nodes, you intend to perform an installation of a SQL Server 2008 mission-critical cluster. Constant availability is needed by the mission-critical cluster. You have to configure the SQL Server cluster to failover and reduce the service disruption to the least. Which failover option should you use?()
A. You should allow failback only during non-business hours
B. You should immediately allow failback
C. You should prevent automatic failback
D. You should allow failback only during business hour