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[主观题]

The optical mouse is superior to the basic one in that the former has no moving parts.A．Ri

The optical mouse is superior to the basic one in that the former has no moving parts.

A．Right

B．Wrong

C．Not mentioned

答案

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发布时间：2020-10-05

更多“The optical mouse is superior to the basic one in that the former has no moving parts.A．Ri”相关的问题

第1题

TThe optical mouse is superior to the basic one in that the former has no moving

parts.

TThe optical mouse is superior to the basic one in

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第2题

The optical mouse is superior to the basic one in that theformer has no moving parts.A. Ri

The optical mouse is superior to the basic one in that theformer has no moving parts.

A. Right

B. Wrong

C. Not mentioned

点击查看答案

第3题

Computer MouseThe basic computer mouse is an amazingly clever invention with a relatively

Computer Mouse

The basic computer mouse is an amazingly clever invention with a relatively simple design that allows us to point at things on the computer and it is very productive. Think of all the things you can do with a mouse like selecting text for copying and pasting (涂), drawing, and even scrolling on the page with the newer mice with the wheel. Most of us use the computer mouse daily without stopping to think how it works until it gets dirty and we have to learn how to clean it. We learn to point at things before we learn to speak, so the mouse is a very natural pointing device. Other computer pointing devices include light pens, graphics (图形) tablets and touch screens, but the mouse is still our workhorse.

The computer mouse was invented in 1964 by Douglas Englehart of Stanford University. As computer screens became more popular and arrow keys were used to move around a body of text, it became clear that a pointing device that allowed easier motion through the text and even selection of text would be very useful. The introduction of the mouse, with the Apple Lisa computer in 1983, really started the computer public on the road to relying on the mouse for routine (常规) computer tasks.

How does the mouse work？ We have to start at the bottom, so think upside down for now. It all starts with the mouse ball. As the mouse ball in the bottom of the mouse rolls over the mouse pad, it presses against and turns two shafts (轴). The shafts are conneected to wheels with several small holes in them. The wheels have a pair of small electronic light-emitting devices called light-emitting diodes (LED) mounted on either side. One LED sends a light beam to the LED on the other side. As the wheels spin and a hole rotates by, the light beam gets through to the LED on the other side. But a moment later the light beam is blocked until the next hole is in place. The LED detects (发现) a changing pattern of light, converts the pattern into an electronic signal, and sends the signal (发信号) to the computer through wires in a cable that goes out the mouse body. This cable is the tail that helps give the mouse its name. The computer interprets the signal to tell it where to position the cursor on the computer screen.

So far we have only discussed the basic computer mouse that most of you probably have or have used. One problem with this design is that the mouse gets dirty as the ball rolls over the surface and picks up dirt. Eventually you have to clean your mouse. The newer optical mice avoid this problem by having no moving parts.

Most computer users want to know how the computer mouse works.

A．Right

B．Wrong

C．Not mentioned

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第4题

回答{TSE}题： Computer Mouse The basic computer mouse is an amazingly clever invention with

arelatively simple design that allows us to point at things on the computer andit is very productive. Think of all the things you can do with a mouse like selecting text for copying and pasting, drawing,and even scrolling on the page with the newer mice with the wheel. Most of ususe the computer mouse daily without stopping to think how it works until itgets dirty and we have to learn how to clean it. We learn to point at thingsbefore we learn to speak, so the mouse is a very natural pointing device. Othercomputer pointing devices include light pens, graphics tablets and touchscreens, but the mouse is still our workhorse. The computer mouse was invented in 1964 by Douglas Englehart ofStanford University. As computer screens became more popular and arrow keyswere used to move around a body of text, it became clear that a pointing devicethat allowed easier motion through the text and even selection of text would bevery useful. The introduction of the mouse, with the Apple Lisa computer in1983, really started the computer public on the road to relying on the mousefor routine computer tasks. How does the mouse work？ We have to start at the bottom, so thinkupside down for now. It all starts with the mouse ball. As the mouse ball inthe bottom of the mouse rolls over the mouse pad, it presses against and turnstwo shafts. The shafts are connected to wheels with several small holes in them.The wheels have a pair of small electronic light-emitting devices calledlight-emitting diodes(LED) mounted on either side. One LED sends a light beamto the LED on the other side. As the wheels spin and a hole rotates by, thelight beam gets through to the LED on the other side. But a moment later thelight beam is blocked until the next hole is in place. The LED detects achanging pattern of light, converts the pattern into an electronic signal, andsends the signal to the computer through wires in a cable that goes out of themouse body. This cable is the tail that helps give the mouse its name. Thecomputer interprets the signal to tell it where to position the cursor on thecomputer screen. So far we have only discussed the basic computer mouse that mostof you probably have or bare used. One problem with this design is that themouse gets dirty as the ball rolls over the surface and picks up dirt.Eventually you have to clean your mouse. The newer optical mice avoid thisproblem by having no moving parts. {TS} Most computer users want to know how the computer mouse works.

A. Right

B. Wrong

C. Not mentioned

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第5题

请根据短文的内容，回答题。 Computer MouseThe basic computer mouse is an amazingly clever in

请根据短文的内容，回答题。

Computer Mouse

The basic computer mouse is an amazingly clever invention with a relatively simple design that allows us to point at things on the computer and it is very productive. Think of all the things you can do with a mouse like selecting text for copying and pasting, drawing, and even scrolling on the page with the newer mice with the wheel. Most of us use the computer mouse daily without stopping to think how it works until it gets dirty and we have to learn how to clean it. We learn to point at things before we learn to speak, so the mouse is a very natural pointing device. Other computer pointing devices include light pens, graphics tablets and touch screens, but the mouse is still our workhorse.＜br＞

The computer mouse was invented in 1964 by Douglas Engle hart of Stanford University. As computer screens became more popular and arrow keys were used to move around a body of text, it became clear that a pointing device that allowed easier motion through the text and even selection of text would be very useful. The introduction of the mouse, with the Apple Lisa computer in 1983,really started the computer public on the road to relying on the mouse for routine computer tasks.＜br＞

How does the mouse work？ We have to start at the bottom, so think upside down for now. It all starts with the mouse ball. As the mouse ball in the bottom of the mouse rolls over the mouse pad, it presses against and turns two shafts. The shafts are connected to wheels with several small holes in them. The wheels have a pair of small electronic light-emitting devices called light-emitting diodes (LED) mounted on either side. One LED sends a light beam to the LED on the other side. As the wheels spin and a hole rotates by, the light beam gets through to the LED on the other side. But a moment later the light beam is blocked until the next hole is in place. The LED detects a changing pattern of light, converts the pattern into an electronic signal, and sends the signal to the computer through wires in a cable that goes out of the mouse body. This cable is the tail that helps give the mouse its name. The computer interprets the signal to tell it where to position the cursor on the computer screen.＜br＞

Most computer users want to know how the computer mouse works. 查看材料

A.Right

B.Wrong

C.Not mentioned

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第6题

Which of the following statements are correct about the test of ZXCTN6200?()

A.The average optical power of the optical interface is measured as follows. One end of the pigtail is connected to the light emitting interface of the optical board and the other end is connected to the input interface of the optical power meter. After the optical power becomes stable, read the value, which is the transmitting optical power of the optical interface.

B.The average optical power of the optical interface is measured as follows. One end of the pigtail is connected to the light receiving interface of the optical board and the other end is connected to the input interface of the optical power meter. After the optical power becomes stable, read the value, which is the transmitting optical power of the optical interface.

C.The sensitivity and overload indicator of optical interface are measured as follows. Increase the adjustable optical attenuator gradually and observe the critical value when the optical interface generates an error code. Record the optical power value at this time, which is the sensitivity.

D.The sensitivity and overload indicator of optical interface are measured as follows. Reduce the adjustable optical attenuator gradually and observe the critical value when the optical interface generates an error code. Record the optical power value at this time, which is the overload indicator.

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第7题

An optical computer is a computer that uses electricity i. e. electrons, to manipulate, store and tr

ansmit data.

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第8题

WDM&OTN系统层级有（)。

A.OTS(Optical Transmission Section)光传输段

B.OMS(Optical Multiplexing Section)光复用段

C.OCh(Optical Channel)光信道

D.ODU(Optical channel Data Unit)光通道数据单元

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