题目内容

说明高速钢中合金元素的作用及高速钢的热处理工艺特点。

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Your network contains a file server that runs Windows Server 2008 R2. The server has File Server Resource Manager (FSRM) installed.A file screen is created for a folder named Data. Data is located on the C drive. The file screen is configured to block files contained in the Audio and Video file group.You need to allow users in the sales department to upload video files to C:\Data\Sales. What should you do?（）

A. Create a file screen exception.
B. Modify the Audio and Video file group.
C. Implement an active file screen on C:\Data\Sales.
D. Implement a passive file screen on C:\Data\Sales.

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说明高速钢中合金元素的作用及高速钢的热处理工艺特点。

气液分离

影响种子生产计划的因素。

水泥石由（）、（）、（）等组成。