首页
登录
职称英语
"Fax Machines"[img]2012q1/ct_etoefm_etoefspeakc_1738_20121[/img] Now listen
"Fax Machines"[img]2012q1/ct_etoefm_etoefspeakc_1738_20121[/img] Now listen
游客
2025-02-08
32
管理
问题
"Fax Machines"
Now listen to part of a lecture in a business class. The professor is discussing the way that a fax machine transmits and receives data.
Question
Using the main points and examples from the lecture, describe the three parts of a fax machine and then explain how the fax process works.
Preparation Time: 20 seconds
Recording Time: 60 seconds
Narrator 2: Number 6. Listen to part of a lecture. Then listen for a question about it. After you hear the question, you have 20 seconds to prepare, and 60 seconds to record your answer.
Narrator 1 : Now listen to part of a lecture in a business class. The professor is discussing the way that a fax machine transmits and receives data.
Professor:
Okay, to illustrate my point that many new machines are simply combinations of machines that are already available, let’s talk about the fax machine. To understand how a fax machine works, I’d like you to think of it as three machines.., a copier, a modem, and a printer. First, the data is copied. How does that happen? Well, when you load paper into the fax machine, a light shines on it and optical sensors read whether a specific point on the paper is black or white. These sensors communicate the digital information into a microprocessor, where a copy of the page is made of black or white dots. Thus, you see that in the first step, the fax machine functions like a copier. Next, the fax machine works like a modem. Remember, a modem takes a black-and-white image and converts this digital data into an analog signal, that is, electronic impulses that can be sent over a phone line. The fax machine calls another fax machine to transmit, using two different types of tones to represent the black and white dots in the document. For example, it might send an 800-Hertz tone for white and a 1,300-Hertz tone for black. The last part of a fax machine is the printer. After the receiving fax machine answers the sending fax machine, it begins to accept the electronic impulses, and then it converts them back to the black-and-white dots in a digital image. Finally, it prints the image out on paper just like any other printer.
Narrator 1: Using the main points and examples from the lecture, describe the three parts of a fax machine and then explain how the fax process works. Narrator 2: Please prepare your answer after the beep.
Beep
[Preparation time: 20 seconds]
Narrator 2: Please begin speaking after the beep.
Beep
[Recording time: 60 seconds]
Beep
选项
答案
Rexponses will vary.
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3948237.html
相关试题推荐
"BiologyClass"[img]2012q1/ct_etoefm_etoeflistz_1612_20121[/img][br]Whichtwo
"BiologyClass"[img]2012q1/ct_etoefm_etoeflistz_1612_20121[/img][br]Whichoft
"Professor’sOffice"[img]2012q1/ct_etoefm_etoeflistz_1606_20121[/img][br]Whyd
"Professor’sOffice"[img]2012q1/ct_etoefm_etoeflistz_1606_20121[/img][br]What
"Professor’sOffice"[img]2012q1/ct_etoefm_etoeflistz_1606_20121[/img][br]What
"Professor’sOffice"[img]2012q1/ct_etoefm_etoeflistz_1606_20121[/img][br]Whyd
"EnvironmentalScienceClass"[img]2012q1/ct_etoefm_etoeflistz_1592_20121[/img][
"EnvironmentalScienceClass"[img]2012q1/ct_etoefm_etoeflistz_1592_20121[/img][
"EnvironmentalScienceClass"[img]2012q1/ct_etoefm_etoeflistz_1592_20121[/img][
"Professor’sOffice"[img]2012q1/ct_etoefm_etoeflistz_1586_20121[/img][br]What
随机试题
Whathappensduringthenaturalgrowthofatreeeachyear?[originaltext]Du
Everyyear,theNobelPrizeisgiventooutstandingworkinsixfields:phys
甲喝醉后在家耍酒疯,随手将笔记本电脑从15楼扔出窗外,砸中在小区散步的居民王某,
下列关于TCP/IP协议的描述中正确的有()。A.lP层可提供面向连接的服务和无
提出,文章“乃经国之大业,不朽之盛事”的人是()A.曹操 B.曹丕 C.陆机
下列谱例中的低声部使用了哪种复调模仿手法?() A.倒影模仿 B.扩
制备黑膏药常选用的植物油是A.菜籽油B.大豆油C.花生油D.麻油E.棉籽油
下列教育家中,最早明确提出教育学的科学性问题的是( )A.裴斯泰洛齐 B.赫
王某对县民政局的决定不服向法院提起行政诉讼,县民政局向法院提供了由民政部制定的规
对卫生问题解决程度或达到计划预期目标的实际程度进行的评价属于A.效果评价 B.
最新回复
(
0
)