题目内容

新乳化液泵站运行（）小时后必须换油。

A. 100
B. 150
C. 200
D. 250

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Your network contains a server named Server1 that runs Windows Server 2008 R2. You need to configure scheduled backups on Server1 to meet the following requirements: ˆ Maintain 60 days of backups. ˆ Minimize the performance impact on Server1 while a backup is running. What should you do?（）

A. From Windows PowerShell, run the New-WBPolicy cmdlet.
B. From Windows PowerShell, run the Set-WBVssBackupOptions cmdlet.
C. From the Backup Schedule Wizard, click the Backup to a volume option.
D. From the Backup Schedule Wizard, click the Backup to hard disk that is dedicated for backups (recommended) option.

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新乳化液泵站运行（）小时后必须换油。

A. 100 B. 150 C. 200 D. 250

什么是离心泵的汽蚀？汽蚀是怎样产生的？

地面气象观测场四周障碍物的影子应不会投射到（）和（辐射）观测仪器的受光面上，附近没有（反射阳光强）反射阳光强的物体。

出生缺陷的发生与哪些因素有关？

Your network contains a server named Server1 that runs Windows Server 2008 R2. You need to configure scheduled backups on Server1 to meet the following requirements: ˆ Maintain 60 days of backups. ˆ Minimize the performance impact on Server1 while a backup is running. What should you do?（）

A. 100
B. 150
C. 200
D. 250