问题
多项选择题
下列RLP说法正确的是（）
A、当RLP检测到前向缓冲区的数据量超过SCH申请门限，就发起SCH申请；
B、当RLP检测到要求重传的帧数超过RLP重传帧数检测门限，就发起SCH申请；
C、在数据业务分层结构中，RLP层紧连IP层，承担组帧和分发的功能；
D、只有当A和B两个条件都符合时，才发起SCH申请。
答案
参考答案：A, B
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下列RLP说法正确的是（）
A、当RLP检测到前向缓冲区的数据量超过SCH申请门限，就发起SCH申请；
B、当RLP检测到要求重传的帧数超过RLP重传帧数检测门限，就发起SCH申请；
C、在数据业务分层结构中，RLP层紧连IP层，承担组帧和分发的功能；
D、只有当A和B两个条件都符合时，才发起SCH申请。
参考答案：A, B
（1）从B栏中找出与A栏相对应的答语。（5分） A B
2. What day is it today? 3. Could you please do me a favor? 4. How well you dance! 5. We won the basketball match. （2）从框里选择填入对话相应空白处的适当选项（10分）
B. Yes, please. A. How do you feel now? B. 2 . A. What are you going to do before leaving school? B. I’m going to take some photos with my teachers and classmates, give gifts to my teachers and write best wishes to my classmates A. Will you miss your teachers and classmates? B. Sure, and I’ll remember the past three years of my school life for ever. A. 3 B. By sending e-mails, making telephone calls or writing letters. A. When are you going to have a get-together with your classmates? B. We’ll be back for our school’s 20th anniversary ceremony. A. 4 B. I’m going to be a scientist, so I’ll keep on working hard at my lessons to make my dream come true. A. 5 . B. First, I want to say “Thanks” to my teachers for teaching me so well. Second, I wish my teachers and classmates health, happiness and good luck. At last, I hope our school will continue to be the top in Tongren. |