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【单选题】
You are one of the network administrators for your company. All network servers run Windows Server 2003. Your company operates a total of four offices. The office where you work has 15 servers. You are responsible for supporting and maintaining all of these servers. You need to design a monitoring plan that will achieve the following goals: Track all performance changes on the servers. Record performance data to anticipate the need for future upgrades. What should you do? （）A.
On each server in your office, use Performance Logs and Alers to create a baseline log. Configure the log to collect data every five minutes for one day. Use the same counters for each server to create a log file. Schedule the log to run weekly.
B.
From a monitoring computer, use Performance Logs and Alerts to create a baseline log for each server in your office. Configure the log to collect data every five minutes for one day. Use the same counters for each server to create a log file. Schedule the log to run weekly.
C.
On each server in your office, use Performance Logs and Alerts to create threshold-based alerts. Configure the alerts to send a message to your monitoring computer when they are triggered. Set each alert to start a new scan when the alert finishes.
D.
From a monitoring computer use Performance Logs and Alerts to create a new counter set in System Monitor. Configure the counters to run continuously.
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【简答题】短路是电力系统的严重故障。 () 、 () 和 ()是校验电器设备的重要数据。
【单选题】有一种微生物，它产生毒素污染河水时会使河水变成绿色，这种现象被称为泛绿，当鸭子的主要食物河虾被这种有毒微生物污染时，鸭子就不会在那些区域觅食。对于鸭子的这种行为，科学家的一种解释认为，鸭子在某个地方正式觅食之前会先尝几只河虾，并且能够察觉出其中的任何毒素。 以下哪项为真，将最有力地表明上述解释是不正确的?()
A.
当河里发生泛绿现象的时候，既看不到鸭子，水里也没有河虾
B.
鸭子在某个水域出现是一种显著的标志，表明那里可以找到其他水生生物
C.
少量的微生物毒素不会产生什么危害，但是过量的话还是会使鸭子死亡的
D.
当没有受到泛绿影响的一片河水被人为地染成绿色时，鸭子也不吃那些地方的河虾
【简答题】短路是电力系统的严重故障。（）、（）和（）是校验电器设备的重要数据。
【简答题】短路是电力系统的严重故障。短路冲击电流、短路电流（）和短路容量是校验电器设备的重要数据。