采用碎片丢弃交换模式的交换机开始转发数据帧时已经接收到的帧长度是______。 A． 发布时间：2018-05-26 22:19 │ 来源：www.tikuol.com 题型：单项选择题 问题： 采用碎片丢弃交换模式的交换机开始转发数据帧时已经接收到的帧长度是______。A．14字节 B．64字节C．128字节 D．1518字节
题型：单项选择题 完形填空。 Wei Hua was quite busy yesterday. She got up 1 7: 00 in the morning. She washed her face 2 and had some milk and bread 3 breakfast. It was a fine day. She went to school early. She had four 4 in the morning. She had 5 rest after lunch, 6 she worked very hard in class all day. She playedbasketball after school and then went home. On her way home she 7 a pen. When she 8 home, she had a short rest. After that she helped her parents. She quickly cooked 9 and cleaned the house. She watched TV for half an hour after supper. Then she finished her homeworkat half past nine. She 10 at ten.( )1. A. on ( )2. A. sadly ( )3. A. for ( )4. A. matches ( )5. A. a few ( )6. A. and ( )7. A. buy ( )8. A. took ( )9. A. supper ( )10. A. went to schoolB. before B. happily B. about B. games B. a little B. or B. bought B. got to B. breakfast B. went to bedC. for C. slowly C. on C. classes C. few C. but C. to buy C. left C. lunch C. got to school D. about D. quickly D. of D. books D. little D. for D. buying D. arrived at D. meals D. got up 查看答案