某同学周末在家自制了一个三角形木架，经测量其三边分别为(2x+1)cm， (3x 发布时间：2017-05-17 21:45 │ 来源：www.tikuol.com 题型：解答题 问题： 某同学周末在家自制了一个三角形木架，经测量其三边分别为(2x+1)cm， (3x-2)cm，(8-2x)cm.请你帮他计算这个三角形的周长？如果x=3，那么这个三角形的周长是多少？
题型：解答题 A transport layer protocol has several responsibilities. One is to create a process-to-process (program-to-program) communication; TCP uses port (71) to accomplish this. Another responsibility of a transport layer protocol is to create a (72) and error-control mechanism at the transport level. TCP uses a sliding (73) protocol to achieve flow control. It uses the acknowledgment packet, time-out, and retransmission to achieve (74) control. The transport layer is also responsible for providing a connection mechanism for the application program. The application program sends (75) of data to the transport layer. It is the responsibility of the transport layer at the sending station to make a connection with the receiver.A．pathB．windowC．frameD．diagram 查看答案
题型：解答题 下列对应急准备认识错误的是( )A．只体现在响应工作所需的人员准备中B．恢复工作中所需的资金准备也是应急准备的工作内容之一C．预防阶段的人员教育准备也是应急准备的工作之一D．监测预警工作所需的物资准备也是应急准备的工作之一 查看答案