对《标准》和《规范》中技术指标的掌握应做到：主要指标应该怎样处理？（）
A.灵活掌握
B.强制执行
C.论证使用
D.选择论证
参考答案：B
散文集《游牧长城》的作者是以诗歌创作步入文坛的（）。
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.
5（）
A．path
B．rout
C．circuit
D．way
