Which statement is true about the comparison of voice traffic with video traffic？（） [" Video conferencing traffic tends to be much more bursty in nature and is more prone to have an impact on other traffic flows."," Latency requirements are less stringent for video traffic than for voice traffic."," Video traffic is less sensitive to dropped packets than for voice traffic."," Video traffic requires the retransmission capabilities of TCP whereas voice uses UDP."," Voice traffic tends to be much more bursty in nature and is more prone to have an impact on other traffic flows."," Voice traffic requires the retransmission capabilities of TCP whereas video uses UDP."]
8种必须的aa有哪些？
下列关于工具栏说法中不正确的是（） ["Word具有使用菜单命令、工具栏命令按钮、快捷菜单、键盘命令、鼠标多种方式，实现复制文字的功能。","键盘的组合键Ctrl+C键可以实现“复制”操作，Ctrl+V键可以实现“粘贴”操作。","选择“编辑复制”命令，然后将光标移动到需要复制文字的目标位置，使用“编辑粘贴”命令。这是使用格式栏的命令。","按动工具栏中的复制按钮，然后将光标移动到需要复制文字的目标位置，按动工具栏中的粘贴按钮。这是使用工具栏的命令按钮。"]
简述布鲁姆的目标分类理论与加涅的学习结果分类理论的异同。
在预制外挂墙板施工中，浇筑混凝土，分层振捣时振动棒必须进入下一层混凝土（），使上下两层充分结合密实。 ["20-50mm","20-70mm","50-80mm","50-100mm"]
简述全民教育思想的基本涵义。
