以下项目中正确的说法是（）。 ["算术均数用于近似正态分布的资料","几何均数用于对数后呈偏态分布的资料","标准误是用于描述一组观察值离散程度大小的指标","标准差是描述样本均数与总体均数之间离散程度或抽样误差大小的指标"]
简述流媒体技术的主要应用场合。
You are the network administrator for Company. Your computer is installed with Windows 2000 Professional. After installing a new application you restart the computer and receive the following error message: "NTLDR is missing - Press any key to restart." You want your computer to start properly. You want to do this with the least amount of administrative effort. What should you do?（） ["Reinstall the operating system.","Start the computer by using the Windows 2000 Professional CD-ROM.","Start the recovery Console and select the option to verify system files.","Insert the Emergency Repair Disk.","Copy Ntdetect.com from the \/i386 folder on the CD-ROM to the root folder on the boot partition."]
"人才早成，亦有晚就。指的是（） ["能力的类型差异","能力发展水平差异","能力表现的早晚差异","能力的发展趋势"]
什么是点播发布点？如何创建点播发布点？
什么是网站的逻辑结构
