试题与答案

烟草制品包括哪些范围?

题型:问答题 简答题

题目:

烟草制品包括哪些范围?

答案:

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下面是错误答案,用来干扰机器的。

参考答案:1、间隙小或能消除间隙2、在垂直于速度方向上的刚度高3、摩擦系数小但不随速度变化4、高阻尼5、移动导轨和其辅助元件尺寸小,惯量低。

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题型:问答题

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请简要回答:

结合三个材料,说明依法治国的重要意义。划分的。单一制的国家实行的是集权制,中中央政府的权利很大,地方权力小,要接受中央的领导。联邦制国家实行的是分权制,地方政府权力很大,联邦政府权力有限。

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题型:阅读理解

阅读理解。

     Nuclear energy has always been controversial. But since the tsunami and nuclear disaster in

Fukushima (Japan) last year the issue is back in the headlines. And the world is divided- some countries

are planning more nuclear plants, while others have promised to shut theirs down.

     After Fukushima, Germany decided to switch off all its nuclear plants by 2022. Switzerland and Italy

are also phasing out nuclear power. But France and the United States remain staunch supporters of

atomic energy. In fact, almost 80% of France's electricity comes from nuclear power, the highest

percentage in the world. And in the US, the Obama administration said it "continues to support the

expansion of nuclear power, despite the crisis in Japan."

     Nuclear supporters claim nuclear power can help the environment. Unlike fossil fuels, nuclear power

doesn't create greenhouse gases. So, pro-nuclear countries argue that nuclear power allows them to

generate energy without contributing to climate change. Britain's chief scientific adviser (John Beddington)

supports this view. He recently said that the world doesn't have the luxury of ignoring nuclear energy.

Nuclear power is also relatively cheap. Renewable energy sources such as solar, hydro and wind power

may be clean, but they're expensive; and right now, they require a lot of investment. This higher cost of

using "green energy" is usually passed onto the consumer. So, while many people may prefer their energy

to come from a renewable source, not so many are prepared to pay higher energy bills. This is of

particular concern while the world economy is in such bad shape.

     The main argument against nuclear energy is that it isn't safe. For a start, nuclear waste is very difficult

to dispose of, and remains toxic to humans for thousands of years. And even before Fukushima, there

were several high-profile nuclear disasters. The most famous is probably the 1986 Chernobyl disaster, in

the Ukraine. The radiation from the meltdown spread all over Europe, affecting thousands.

     The nuclear energy issue is very complex. And it doesn't look like it'll be resolved anytime soon. As a

Japanese commentator recently said, "it's been a bad year for the 'nuclear village', but I don't think they're down and out yet." The battle continues.

1. Which of the following may NOT be the advantage of nuclear energy over other energy sources? 

A. Nuclear energy doesn't produce any greenhouse gases.

B. Nuclear energy can help prevent the climate damage.

C. Nuclear energy is more environmental-friendly than other green energy sources.

D. Nuclear energy can save the consumers some money, compared to other renewable energies.

2. What does the underlined word "this " refer to in paragraph 4? 

A. The fact that many people prefer to use the green energy sources while unwilling to pay  

     higher bill.

B. The cost of using renewable sources

C. The fact that the nuclear power is cheaper.

D. The investment of renewable energy sources

3. In the 5th paragraph, the author takes the case of Chernobyl disaster in Ukraine to _______.

A. convince the reader that nuclear waste is difficult to get rid of.

B. explain that nuclear waste may remain harmful to humans for thousands of years.

C. persuade the world not to use nuclear energy.

D. support the idea that nuclear energy is not safe.

4. We can learn from the last paragraph that _______.

A. the Japanese commentator is positive about the future of nuclear energy.

B. the nuclear energy issue will be soon settled.

C. a battle will break out in the future.

D. Japan is considering to build a nuclear village in the future.

5. What is the author's purpose of writing the passage? 

A. To highlight the danger of using nuclear energy.

B. To introduce some serious nuclear disasters.

C. To show the argument between nuclear supporters and protesters.

D. To give some advice on how to use nuclear energy safely.

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