请简述保证保险的特点答：保证保险是在被保证人的行为或不行为致使被保险人（权利人）遭受经济损失时，由保险人来承担经济赔偿责任的保险。特点：
Users at the Charleville Company began experiencing high network delays when Internet connectivity was enabled for all users. After investigating the traffic flow, you determine that peerto-peer traffic from a music download site is consuming a large amount of bandwidth. Which QoS mechanism can you implement to improve the network response time?（） [" Use CBWFQ to queue the peer-to-peer traffic into the default traffic class."," Use class-based WRED to randomly drop the peer-to-peer traffic during network congestions."," Use class-based policing to limit the peer-to-peer traffic rate."," Use class-based shaping to delay any excessive peer-to-peer traffic. Answer: C"]
形式仿效性，是指形式美教育可使人通过对经典形式美的仿效而达到对形式美的创造性运用。
原材料盘盈又无法查明原因，正确的处理方法是报经批准后将其（）。 ["增加其他业务收入","增加营业外收入","冲减管理费用","冲减销售费用"]
传递听觉信息的神经通路是（） ["内侧丘系","脊髓丘系","外侧丘系","三叉丘系"]
现代教师应该具备哪些角色？
