简述网上教学形式。
What is the purpose of IGMP in a multicast implementation?（） [" it is not used in multicast"," it determines the virtual address group for a multicast destination"," it dynamically registers individual hosts in a multicast group on a specific LAN"," it is used on WAN connections to determine the maximum bandwidth of a connection"," it determines whether Bidirectional PIM or PIM sparse mode will be used for a multicast flow"]
下列哪个人物不处于十月革命期间？（） ["列宁","高尔基","赫鲁晓夫","朱可夫"]
（）dBm is the recommended radius of a cell for a voice-ready wireless network. [" 4"," 6"," 7"," 10"]
下列选项中正确的是（） ["一般情况，研究计划的形式分为七个部分，对于特定的研究项目不可能提出其它一些研究计划的形式。","研究计划的准备是研究过程的重要一步，许多研究在开始进行之后都要求提交研究计划","具体到不同的研究内容和研究方法，尽管存在着性质和层次上的差异，研究工作的程序是一成不变的","研究计划应包括以下三方面内容：研究目标和理论框架，以往研究的考察，研究的设计与方法"]
弹性预算
