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对职工进行培训指导授课时可灵活选用哪些方法？

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You have a computer running Windows 2000 Professional. You have purchased a new USB scanner. You attached it to the USB port. When you go to device manager to see the status of the USB port， you find a USB controller there but with a yellow warning icon next to the host controller name. What should you do to resolve this problem？（）

A. Update the scanner drivers using certified drivers
B. Enable the USB port in the computers BIOS again.
Contact the maker or vendor for you system and obtain the current version of BIO
D. Enable the USB hub controller in device manager.

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为什么机械搅拌空气自吸式浮选机多采用浅槽型？

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地形倒置现象是怎样形成的？

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老年人认知功能粗筛方法是指告诉被检查者“我讲要说三件物品的名称，请您立刻重复”。过1分钟后请其再次重复。如被检查者无法立即重复或1分钟后无法完整回忆三件物品称为（），需进一步行简易智力状态检查量表检查。

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