励磁电压上升速度是指励磁电压在强励发生后（）由正常电压开始的平均上升速度。
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选择能够有效实施所选择战略的组织结构和控制对管理者来说是一种挑战，因为（）
A. 处于全球经济中的公司必须在灵活中保持一定的稳定性
B. 管理者在做出最优决策时不可能获得所有的必要信息
C. 公司的结构不应该复制它的竞争者结构
D. 企业所处的环境变化太快而难以维持一个稳定的公司结构
对全球而言，需要（）颗静止通信卫星组成通信网，就可实现全球范围的实时通信。
You are the administrator of ExamSheet's network. The software department is preparing to rewrite an accounting application so that it will run on Windows 2000 Professional computers. All of the computers in the software department currently use Windows 98. You plan to configure the computers in the software department so that users can use both Windows 98 and Windows 2000 Professional during the project. You want to ensure that users in the software department can access all of the files on their computers while using operating system. What should you do?（）
A. Create and format an NTFS volume. Install Windows 2000 Professional on the volume. Create a primary partition in the remaining disk space and format the volume using the FAT32 file system.Reinstall Windows 98 on the new primary partition.
B. Create and format an NTFS volume. Install Windows 2000 Professional on the volume. Create an extended partition in the remaining disk space and format the volume using the FAT32 file system. Reinstall Windows 98 on the new extended partition.
Create and format and extended partition. Create a logical drive within the extended partition and format the drive with the FAT32 file system. Install Windows 2000 Professional on the new partition.
D. Create and format an extended partition. Create a logical drive within the extended partition and format the drive with the NTFS file system. Install Windows 2000 Professional on the new partition.
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