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建筑工程中使用的水泥，其出厂时间超过（），必须进行复试。

A. 1个月
B. 3个月
C. 100天
D. 150天

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任意调换电动机两相绕组所接交流电源的相序。旋转磁场即反转。（）

A. 正确
B. 错误

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议付行在为受益人办理国内信用证议付后，保留对受益人的追索权。

A. 正确
B. 错误

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Your company has a single active directory domain. The company has a main office and three branch offices. The domain controller in the main office runs windows 2008 server and provides DNS for the main office and all of the branch offices.Each branch office runs windows server 2008. Users in the branch offices report that it takes a long time to access network resources. You confirm that there are no problems with WAN connectivity or bandwidth. You need to ensure that users in the branch offices are able to access network resources as quickly as possible. Which two actions should you perform? （）

A. Configure a standard primary zone in each of the branch offices.
B. Configure a forwarders that point to the DNS server in the main office.
Configure a secondary zone in each of the branch offices that users the main office DNS server as a master.
D. Install DNS servers in each of the branch offices.

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影响压延产品质量的因素有哪些？

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建筑工程中使用的水泥，其出厂时间超过（），必须进行复试。

A. 1个月 B. 3个月 C. 100天 D. 150天

任意调换电动机两相绕组所接交流电源的相序。旋转磁场即反转。（）

议付行在为受益人办理国内信用证议付后，保留对受益人的追索权。

影响压延产品质量的因素有哪些？

A. 1个月
B. 3个月
C. 100天
D. 150天