阈限值
Which two queuing methods will allow a percentage of the available bandwidth to be allocated to each queue？（） ["first-in， first-out queuing （FIFO）","priority queuing （PQ）","custom queuing （CQ）","weighted fair queuing （WFQ）","class-based WFQ （CBWFQ）","low latency queuing （LLQ）"]
数字测速方法有几种？各有什么优缺点？
下面关于鱼石螈的描述，不正确的是（） ["鱼石螈化石在格陵兰岛发现","鱼石螈是最早登上陆地的两栖动物","鱼石螈有肺和鳃两套呼吸系统","鱼石螈同时具有鱼类和两栖动物的骨骼特征"]
玩具有哪些教育作用？
电子对抗兵是怎样组成的？
