题目内容

制冷剂在制冷系统连续循环的流动中只发生(),而使冷却对象的温度得以降低。

A. 化学变化
B. 物理变化
C. 状态变化
D. 温度变化

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在厚度不等而传递载荷相等的两种铆接件中,厚度较大的铆接件铆钉直径应()厚度较小的铆接件铆钉直径。

A. 等于
B. 小于
C. 大于
D. 不考虑

保护用电流互感器安装位置的选择,既要考虑消除保护死区,又要尽可能消除电流互感器本身故障所产生的后果。

A. 正确
B. 错误

()是指多式联运经营人仅对其自己履行运输区段中发生的货物灭失或损坏承担责任,而对由区段承运人履行的运输不负责任。

A. 单一责任制
B. 多重责任制
C. 责任分担制
D. 网状责任制

You are a professional level SQL Server 2005 database administrator in an international corporation named Wiikigo. You are experienced in implementing high-availability solutions, monitoring the database server, and design deployment. In the company, you major job is the deployment, maintenance and support of Microsoft SQL Server 2005.You work as the administrator of a SQL Server 2005 computer, and the computer is called SQL01. The users complain the slow response of all client applications which connect to SQL01. You find that the CPU and memory utilization of SQL01 is low. In addition, the disk activity is low. The cause of the performance problem should be identified. Which action should be performed?()

A. System Monitor should be utilized to have SQL1s cache hit ratio examined.
B. The sys.dm_db_index_physical_stats dynamic management function (DMF) should be examined.
C. The sys.dm_db_partition_stats dynamic management view (DMV) should be examined.
D. Task Manager should be utilized to have utilization of SQL1s network adapter examined.

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