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What kind of robots is Paul going to discuss?
What kind of robots is Paul going to discuss?
admin
2011-01-21
32
问题
What kind of robots is Paul going to discuss?
W: Hi, Paul. All set for your speech club presentation this evening?
M: Yeah. I’m going to discuss robots.
W: Robots? You mean those machines that walk and talk like in the movies?
M: No. Industrial robots like those used in the automobile and electronics industries.
W: Come to. think of it, I saw an article about that kind of robot the other day. Several pictures of robots welding ears, but they certainly didn’t look the way I thought robots should look.
M: The robots we usually imagine are made up in science fiction. In industry, robots are designed to do a specific set of operations such as welding car frames. They are rarely built to resemble humans.
W: Actually all they need is a kind of brain to give signals, and a mechanism such as an arm to carry out instructions. Right?
M: Right. Tiny computers become the brains of these robots. The computers send signals in the form of electrical impulses that move an arm in a claw. The claw is the hand that does particular kinds of work.
W: OK. But we’ve had machines on assembly lines doing work for people for years. That’s what started the industrial revolution, remember?
M: But each of those machines can only perform a single operation. And it takes months to modify them. The new industrial robots can each do a number of tasks and it’s easy to reprogram them to perform totally different operations. That’s one reason they’re becoming so popular.
W: They increase productivity too, don’t they? I read that even though they’re still quite expensive, they often cost less per year than a worker doing the same job. I imagine robots will be used more and more.
M: Exactly. So now that you know all about the next industrial revolution, you don’t have to come to speech club tonight.
选项
A、They can perform different tasks.
B、They are easy to reprogram.
C、They increase productivity.
D、They perform a single operation at a time.
答案
D
解析
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