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下列田间杂草各属哪个科：繁缕：（），藜：（）喜旱莲子草：（），簇生卷耳：（），羊蹄：（），扁蓄：（）。

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汽车柴油机全负荷烟度检测时，选定的每一转速点应连续测定烟度三次，若三次测定值相差超过（）（波许单位），则应重测。

A. 0.1Rb
B. 0.2Rb
C. 0.3Rb
D. 0.4R

You are the network administrator for your company. The network consists of a single Active Directory domain. The company has a main office in San Francisco and branch offices in Paris and Bogota. Each branch office contains a Windows Server 2003 domain controller. All client computers run Windows XP Professional. Users in the Bogota office report intermittent problems authenticating to the domain. You suspect that a specific client computer is causing the problem. You need to capture the authentication event details on the domain controller in the Bogota office so that you can find out the IP address of the client computer that is the source of the problem. What should you do？（）

A. Configure System Monitor to monitor the authentication events.
B. Configure Performance Logs and Alerts with a counter log to record the authentication events.
Configure Network Monitor to record the authentication events.
D. Configure Performance Logs and Alerts with an alert to trigger on authentication events.

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虚拟现实（virtual reality，VR）或称虚拟环境（virtual environment，VE）是由计算机生成的、具有临场感觉的环境，它是一种全新的人机交互系统。

A. 正确
B. 错误

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企业在财产清查中如果发现现金账实不符，应及时查明原因，并将短款或溢余记入“待处理财产损益―处理固定资产损益”，待查明原因后处理。

A. 正确
B. 错误

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