题目内容
集成运算放大器中，偏置电路的作用是为各级提供稳定，合适的静态工作点。
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集成运算放大器中，中间级的作用是实现电压的放大。
Homer's epics are said to be written by an ancient Greek blind poet Homer, who is revered as the greatest of ancient Greek epic poets. The epics include two great works of Greek history: theIliadand theOdyssey. The two epics are the earliest works of Greek literature, and are among the greatest treasures of the ancient world, regarded by Westerners as the greatest epics in history. They have had an enormous influence on the history of literature and are of great value for the study of history, geography, archeology and folklore. Both the epics are divided into 24 volumes, theIliadcontaining 15,693 lines and theOdyssey12,110 lines. TheIliadis the oldest surviving work of Greek literature, which tells the story of the 10-year siege of the city of Troy. TheOdysseymainly centers on the Greek hero Odysseus and his journey home after the fall of Troy. Given the concise language, vivid plots and characters, Homer's epics are great masterpieces of literature and occupy an important position in the world literature history.
仿真CSMA/CA的运行，让程序模拟5个节点，主节点（坐标：x=0，y=0）与其它4个节点能相互通信，其它4个节点之间不能通信。已经给定数据包平均传输时间为10ms，slot时长为2ms，基本的退避时长为4ms，随机概率设为0.05，系统模拟运行100ms。试写出基本的参数设定程序语句。
已知节点的横坐标矩阵x_position与纵坐标矩阵y_position，以及横纵坐标统一的坐标矩阵position，假设节点的随机变动参数为5,试写出绘制每个单位时间节点位置随机改变的程序。
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