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[单选题]

Some power plants in Shanxi Province, which are supposed to keep a two－week stockpile

A.invent

B.invention

C.invest

D.inventory

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发布时间：2022-12-04

更多“Some power plants in Shanxi Province, which are supposed to keep a two－week stockpile”相关的问题

第1题

According to the passage, all the following statements about Eastern Europe are true EXCEP

T ______.

A．they are eager to build new nuclear power plants

B．they have totally forgotten the Chernobyl accident 25 years ago

C．they have improved their nuclear power plants

D．they want energy independence

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第2题

In the second paragraph, the author mainly discusses ______.A．the nuclear accidents in Jap

In the second paragraph, the author mainly discusses ______.

A．the nuclear accidents in Japan last March

B．nuclear power policies in Germany

C．German attitude towards nuclear power

D．the safety levels of nuclear power plants in Germany

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第3题

The largest part of the light energy directed towards the earth is ______.A．stored up by t

The largest part of the light energy directed towards the earth is ______.

A．stored up by the plants

B．absorbed by the earth' s atmosphere

C．stored up by the animals in the form. of body fat

D．used for electric power

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第4题

In the first paragraph, the author tries to tell us mainly that ______. A．software is pervasive B．

In the first paragraph, the author tries to tell us mainly that ______.

A．software is pervasive

B．software controls subways and power plants

C．automated teller machines are very convenient

D．mechanically-controlled items are not reliable

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第5题

A typical coal is 10 wt% ash. Most modern power plants grind their coal to an average particle size

of about 100p.lf the ash were uniformly distributed in the coal, what would be the expected size of the remaining ash particles after the coal was burned？ Particles as small as 1μ are regularly found in this ash. Explain how they are probably formed.

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第6题

The Federal new source performance standards for coal-fired power plants require that the emissions

of nitrogen oxides be less than 0.6 lb of nitrogen oxides per million Btu of coal burned. These are to be computed based on all the nitrogen oxides being in the form of NO₂. If a plant emits 0.4 lb of NO and 0.1 lb of NO₂per million Btu, what is its nitrogen oxide emission, reported as NO₂

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第7题

－What are we supposed to do with these plants？－________.A.He wants us to put some of th

A.A.He wants us to put some of them in front of the windows.

B.B.I heard on the radio that it is going to be almost 40 degrees Centigrad

C.C.Is he joining us in the work？

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第8题

2016年大学生物专业英语期末考试英文短文3翻译答案

将英语短文译为中文

3 Self-Powered Nanotech (10分)

Nanosize machines need still tinier power plants

By Zhong Lin Wang

The watchmaker in the 1920s who devised the self-winding wristwatch was on to a great idea: mechanically harvesting energy from the wearer’s moving arm and putting it to work rewinding the watch spring.

Today we are beginning to create extremely small energy harvesters that can supply electrical power to the tiny world of nanoscale devices, where things are measured in billionths of a meter. We call these power plants nanogenerators. The ability to make power on a minuscule scale allows us to think of implantable biosensors that can continuously monitor a patient’s blood glucose level, or autonomous strain sensors for structures such as bridges, or environmental sensors for detecting toxins — all running without the need for replacement batteries. Energy sources are desperately needed for nanorobotics, microelectromechanical systems (MEMS), homeland security and even portable personal electronics. It is hard to imagine all the uses such infinitesimal generators may eventually find.

In Brief

★Nanotechnology has huge potential — but those minuscule devices will need a power source that is better than a battery.

★ Waste energy, in the form. of vibrations or even the human pulse, could provide sufficient power to run such tiny gadgets.

★ Arrays of piezoelectric nanowires could capture and transmit that waste energy to nanodevices.

★ Medical devices will likely be a major application. A pacemaker’s battery could be charged so it would not need replacing, or implanted wireless nanosensors could monitor blood glucose for diabetics.

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第9题

The aim of voyages Maury encouraged in the 1840s was ______.A．to make some sound experimen

The aim of voyages Maury encouraged in the 1840s was ______.

A．to make some sound experiments in the oceans

B．to collect samples of sea plants and animals

C．to estimate the length of cable that was to be made

D．to measure the depths of two oceans

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第10题

And the （) power shortages in some areas are likely to continue for at least two yea

A.choice