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10千伏线路供电半径应满足什么要求？

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于（）年问世的DDC（杜威十进分类法）是现代登记分类体系分类法的先驱。

A. 1905
B. 1933
C. 1876

You are the administrator of your company’s network. You purchase 75 new Windows 2000 Professional computers that will be shared by the users in Graphic organizational unit (OU). All the computers are configured identically. You want the users to be able to maintain their individual desktop settings regardless of which computer they use. You want to accomplish this with the least amount of administrative effort. What should you do? （）

A. Configure each computer to join a workgroup. Create a user account and a local profile for each user.
B. Configure each computer to join a workgroup. Create a domain user account that uses roaming user profiles.
Configure each computer to join the domain. Create a user account for each user on a domain controller.
D. Configure each computer to join the domain. Create domain user accounts that use roaming user profiles.

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千分尺主要是用来测量精度要求较高的工件，其精度可达：0.10㎜。

A. 正确
B. 错误

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高温下施工对混凝土性能有何影响？夏季施工时，如何降低混凝土拌和物的温度？

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