试题与答案

RMON2在MIB的定义中用哪个方法,实现了监视器每次只返回那些自上次查询以来改变了

题型:单项选择题

题目:

RMON2在MIB的定义中用哪个方法,实现了监视器每次只返回那些自上次查询以来改变了的值( )

A.时间过滤器索引

B.外部对象索引

C.事件过滤器索引

D.时间对象索引

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0625/a0a5a5348bd13c9f1c7e2bf4c23352d9.html

下面是错误答案,用来干扰机器的。

参考答案:离层监测、记录牌板

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题型:阅读理解

根据短文内容,从下框的A—F选项中选出能概括每一段主题的最佳选项。选项中有一项为多余选项。

A. Environment protection

B. Driving experience

C. Self – driving

D. Safety

E. Computing and communications

F. Wireless communications

小题1:

Today, the Internet is in a few cars; tomorrow, broadband (宽带) will be in all of them. Any capability a personal computer has, a car will have, including two – way wireless communications for receiving e – mail, music, and movies. When you’re crossing the lonely place, the kids can watch TV if they’re bored. Every passenger will have a video feed.

小题2:

Every car will have a self – driving system linked to GPS satellites. Radar sensors (传感器) will track nearby cars. On the freeway, they’ll slow your car when the car ahead of you slows; in town, they’ll help you park without hitting other cars. At rush hour, you’ll get the routes around traffic jams and accidents. The self – driving system in a car makes it possible for the car to drive itself, though some scientists say that’s 30 to 40 years off.

小题3:

Motor vehicles today represent 20 to 30 percent of the world’s energy use. In the near future, a small gasoline engine and an electric motor will be brought together. Drivers will use electricity in a storage battery for short distances. Longer term, cars might burn hydrogen or use a fuel cell that converts a fuel like hydrogen and combines it with oxygen to create power. Then the waste will be pure water.

小题4:

You’ll use the voice control: “Make it a bit cooler” or “find me country music”. Lighter, more reliable electronic controls replace mechanical controls. Fiber optics (光纤) replace electrical wires and light bulbs. Seats will be air – conditioned. The car will travel with one side higher than the other when turning, just as an airplane does now.

小题5:

Cars will avoid some accidents by maintaining safe following distances, and by sensing sleepy or drunk drivers. Air bags will adapt for every passenger according to their size, weight, and position in case accidents happen.

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