下一代传送网面临的业务特点包括（） ["接入速度（带宽）不断增长","移动语音业务超越固定语音业务，引入3G业务","以太网商业租线业务不断增长","三重播放业务在家庭用户领域的渗透率不断提高"]
优秀班主任的基本特点：（）。 ["有正确的指导思想","有正确的人才标准","有动态的学生理念","有创新的管理风格","有敏锐的感受性"]
牛乳的粘度随温度升高而（） ["升高","不变","下降"]
代谢
Which of these statements about penultimate hop popping are true？（） ["It is used only for directly connected subnets or aggregate routes","It can only be used with LDP.","It is only used when two or more labels are stacked.","It enables the Edge LSR to request a label pop operation from Its upstream neighbors","It is requested through TDP using a special label value that is also called the implicit-null value.","It is requested through LDP using a special label value that is also called the implicit-null value."]
纪事本末体
