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问题 填空题

晴天大气电导率表现为（）等多种变化，其变化规律随（）而异，一般（）位于下半夜到黎明，（）位于上午至下午。

答案

参考答案：单峰；单谷；双峰；双谷；地点和季节；峰值；谷值

单项选择题

对于习惯于______的人来说，舆论监督总是会让他们心生不快；对于有不法行径的人来说，舆论监督常常会让他们恼羞成怒。

填入横线部分最恰当的一项是（）。

A．一言九鼎

B．沽名钓誉

C．一手遮天

D．目空一切
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单项选择题

In the following essay, each blank has four choices. Choose the best answer and write down on the answer sheet.

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 (71) between sending the notification and notification arriving at the source, thousands of additional (72) may arrive. In ATM network, a major tool for preventing (73) is (74) control. When a host wants a new virtual (75) , it must describe the traffic to be offered and the service expected.

71（）

A．interval

B．time

C．slot

D．delay
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