解放战争时期,公安工作的重点从城市转入农村,配合解放军完成土地改革的任务。( )
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In low-speed network, it is usually adequate to wait for congestion to occur and then react to it by telling the source of packets to slow down. In high-speed networks, this approach often works poorly, because in the (1) between sending the notification and notification arriving at the source, thousands of additional (2) may arrive. In ATM network, a major tool for preventing (3) is (4) control. When a host wants a new virtual (5) ,it must describe the traffic to be offered and the service expected. 4()
A. flow
B. admission
C. traffic
D. time
In low-speed network, it is usually adequate to wait for congestion to occur and then react to it by telling the source of packets to slow down. In high-speed networks, this approach often works poorly, because in the (1) between sending the notification and notification arriving at the source, thousands of additional (2) may arrive. In ATM network, a major tool for preventing (3) is (4) control. When a host wants a new virtual (5) ,it must describe the traffic to be offered and the service expected. 1()
A. interval
B. time
C. slot
D. delay
PPP协议是数据链路层的一个协议,它被广泛用于接入Internet中。PPP协议是一个 (1) 。帧长为整数个字节。它克服了SLIP协议的缺点,可以进行协商,并且 (2) 。它可以分成3个层次,其中的网络层协议被称为 (3) ,包括了不同的网络层协议。利用PPP的优势,结合以太网产生了 (4) 协议,该协议可以通过简单的共享设备将多个客户网段接入到骨干网。若通过SLIP方式接入Internet,用户端p是 (5) 。 5()
A. 内部的
B. 正常的
C. 动态获得的
D. 事先分配的
下列先心病的血流动力学改变会导致上述哪种后果 动脉导管未闭伴肺动脉高压()
A. 左心房、左心室增大
B. 左心房、左、右心室增大
C. 右心房、右心室增大
D. 右心房、左、右心室增大
E. 右心室肥厚