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无侧梁结构罐车换长超过（）的长车应在车体架车位架车。

A. 1.5
B. 1.6
C. 1.4
D. 1.2

You are the network administrator for TestKing.com. The network consists of a single Active Directory domain named testking.com. All network servers run Windows Server 2003. You create an organizational unit (OU) named Engineering, which will hold all objects associated with the users and computers in the engineering department. You also create a global group named Engineering Admins, whose members will administer these objects. Now you need to assign the appropriate permissions to the Engineering Admins group so its members can administer the objects in the Engineering OU. First, you use Active Directory Users and Computers to view the properties of the Engineering OU. However, the Security tab is not available. What should you do next?（）

A. Convert the system partition to NTF
B. Enable the Advanced Features option in the View menu of Active Directory Users and Computers.
C. Enable the Users, Groups, and Computers as Containers option in the View menu of Active Directory Users and Computers.
D. Log on by using a user account that has Administrator permissions for the Engineering O

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SELECT命令中，设置条件短语的关键词是（）

A. WHILE
B. FOR
C. WHERE
D. CONDITION

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一台异步电动机铭牌数据中额定转速为975r/min，则此电动机的磁极数是（）极。

A. 6
B. 3
C. 4
D. 8

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