0比特插入/删除法中规定,发送端在两个标志字段间的比特序列,如果检查出连续的()个数字1,就增加1个0比特。
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PPP协议帧头的标志字段填入的值是()
A. 0111110
B. 01111110
C. 011111110
D. 11111100
It rained heavily, severe flooding in the area.
A. cause
B. caused
C. causing
D. having caused
They stood there for half an hour,the stars in the sky.
A. watch
B. watched
C. were watching
D. watching
It isinterestingthatChinese charactersfrompicturesandsigns.
A. evolve
B. resolve
C. solve
D. revolve