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 (64) between sending the notification and notification arriving at the source, thousands of additional (65) may arrive. In ATM network , a major tool for pre- venting (66) is (67) control. When a host wants a new virtual (68) , it must describe the traffic to be offered and the service expected.

68（）

A．path

B．rout

C．circuit

D．way

关于癫痫样放电的叙述，错误的是（）。

A.癫痫样放电是尖、棘波的同义术语

B.癫痫样波是形态学的描述

C.癫痫样波是预测临床的术语

D.尖波可以有或无临床意义

E.尖波和棘波是常见的痫样放电