客、货运内燃机车相比较,客运机车主要具有()。A、较高的速度 B、较大的功率 C、高

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问题:

客、货运内燃机车相比较,客运机车主要具有()。

A、较高的速度

B、较大的功率

C、高速运行平稳和稳定性

D、良好的黏着性能

考点:钳工技能考试中级内燃机车制动钳工中级内燃机车制动钳工题库
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阅读理解。

     Soon computers and other machines (机器) will be able to remember you by looking at your eyes! The

program works because everyone's eyes are different. So in the future you won't have to remember a number

when you want to use a machine or take money out of a bank. You'll just have to look at the machine and it

will be able to tell who you are.

     The eye-recognition (眼睛识别) program has already been tested in shops and banks in the USA, Britain,

Spain, Italy and Turkey. Soon this technology (技术) will take the place of all other ways of finding out who

people are.

     However, scientists are also working on other systems. Machines will soon be able to know you from the

shape of your face or hand or even your smell! We already have machines that can tell who you are from

your voice or the mark made by your finger.

     Eye-recognition is better than other kinds because your eyes don't change as you get older, and don't get

dirty like hands or fingers, and even twins have different eyes. So the eye-recognition program can be up to

94% correct, depending on how good the technology is. However, some other programs may only be 51%

correct at present. In Britain, it was found that 91% of people who had tried it said that they liked the idea of

eye-recognition.  

     In the future your computer will be looking you in the eye. So smile!

1. Where has the eye-recognition program already been tested in a few countries? In _______.

A. shops and banks

B. shops and schools

C. banks and schools

D. schools and hospitals

2. How does the eye-recognition program work?

A. You look at the machine and type a number.

B. You need to speak and then look.

C. The machine looks at your face.

D. You look at the machine.

3. We already have machines that can tell who you are from _______.

A. your eyes or your smell

B. your voice or the mark made by your finger

C. your face or your voice

D. your face or your hand

4. Which of the following doesn't belong to the advantages of the eye-recognition program?

A. Your eyes don't change as you get older.

B. Eyes don't get dirty like hands or fingers.

C. Everyone's eyes are different, even twins have different eyes.

D. We can't see anything without eyes.

5. What problem could there be with the eye-recognition program?

A. Some eyes are the same.

B. Eyes can change.

C. It is not always correct.

D. Eyes can get dirty like hands.

题型:单项选择题

王安石散文特点。

题型:单项选择题

解磷啶治疗有机磷中毒的机制是()

A.胆碱酯酶复活剂,消除或减轻烟碱样症状

B.解除有机磷结合的毒蕈碱样症状

C.与有机磷结合排除体外

D.使有机磷氧化还原成无毒物质

E.以上均不正确

题型:单项选择题

着装整齐;精神饱满;仪态大方;热情礼貌;周到地回答客人的()。便宾客称心满意。

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饱和器开工如何操作?

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