【简答题】什么是Karn算法?在TCP的重传机制中,若不采用Karn算法,而是在收到确认时都认为是对重传报文段的确认,那么由此得出的往返时延样本和重传时间都会偏小。试问:重传时间最后会减小到什么程度?
【简答题】电路如图所示。分析每个电容上的最大电压和电容的极性,电路的名称及输出电压。
【简答题】B Every man wants his son to be somewhat of a clone, not in features but in footsteps. As he grows you also age, and your ambitions become more unachievable. You begin to realize that your boy, in you...
【单选题】防治硬膜外麻醉引起的低血压最好选用:( )
【单选题】Which of the following is not the symptom shared by people who live a vitual life?
A.
They begin to hate the outside forms of socializing(讨厌外面的社交方式).
B.
They feel as if they've become one with the machines(融为一体), and life seems to be unreal.
C.
They start to realize the importance of real human interation .
【单选题】检验批表的右上方编号H××××××口口, H 指的是黑龙江省,第5 、6 位数字以指的是( )。