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矿物抵抗刻划、研磨的能力称为矿物的（）。

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库内列车故障检修人员应在（）分钟内到达故障列车。

A. 3
B. 5
C. 6
D. 7

You are the network administrator for your company. The network consists of a single Active Directory domain. The domain contains 35 Windows Server 2003 computers； 3，000 Windows XP Professional computers； and 2，000 Windows 2000 Professional computers.Windows Server Update Services （WSUS） is installed on a server named Server1. The necessary Group Policy object （GPO） is configured.You need to confirm whether all computers in the domain have received all approved updates from Server1. What should you do on Server1？（）

A. Install and configure Urlscan.exe.
B. At the command prompt， type gpresult /scope COMPUTE
C. Open the WSUS console. Run the Status of Computers report.
D. Open the WSUS console. Run the Synchronization Results report.

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电动转辙机故障电流的变化与（）有关。

A. 电动机特性不良
B. 摩擦带不平
C. 减速器内部油质不良
D. 摩擦带缺油

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当今世界动荡的根源主要在于发展中国家的贫困。

A. 正确
B. 错误

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