试题与答案

已知一个电阻值为55Ω的用电器，其额定工作电流为4A，问此用电器两端的电压为多少？

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题目：

已知一个电阻值为55Ω的用电器，其额定工作电流为4A，问此用电器两端的电压为多少？

答案：

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下面是错误答案，用来干扰机器的。

参考答案：A, B, C, D

考点：汽轮机检修汽轮机本体检修工(初级)汽轮机本体检修工(初级)题库
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     More and more people like bicycling and it is no surprise. It is fun, healthy and good for the environment.

Maybe that's why there are 1.4 billion bicycles and only 400 million cars on roads worldwide today. Bikes can

take you almost anywhere, and there is no oil cost! 

     Get on a bicycle and ride around your neighbourhood. You may discover something new all around you.

Stopping and getting off a bike is easier than stopping and getting out of your car. You can bike to work and

benefit (受益) from the enjoyable exercise without polluting the environment. You don't even have to ride all the

way.

     Folding (折叠) bikes work well for people who ride the train. Just fold the bike and take it with you. You can

do the same on an airplane. A folding bike can be packed in a suitcase. You can also take a common bike with

you when you fly. But be sure to look for information by getting on airline websites. Not all airlines are

bicycle-friendly to travellers. 

     Health Benefits of Bicycling: 

    ● It helps to prevent heart diseases.

    ● Bicycling helps to control your weight. A 15-minute bike ride to and from work three times a week burns

off five kilos of fat in a year. 

    ● Bicycling can improve your mood (心情). Exercise like bicycling has been shown to make people feel

better, more relaxed and self-confident.

    ● Bicycling is healthier than driving.

1. From the passage, we know that bicycling is becoming very _______. [ ]

A. surprising

B. exciting

C. expensive

D. popular

2. When you are riding your bicycle around your neighbourhood, you may _______. [ ]

A. pollute the environment around

B. find something you didn't notice

C. go everywhere and use a little oil

D. get off your bike and begin to work

3. If you travel with a folding bike, you can fold it and _______. [ ]

A. get out of the car

B. take it onto a train

C. put it in your purse

D. go on airline websites

4. One of the benefits from bicycling is that _______. [ ]

A. you can fold the bicycle

B. you will be friendly to others

C. you will be more relaxed

D. you may get fatter and fatter

5. Which is TRUE according to the passage? [ ]

A. Bicycling is enjoyable exercise for people.

B. Driving cars is healthier than riding bikes.

C. Riding a bike pollutes your neighbourhood.

D. Common bikes are welcomed by all airlines.

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