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填空题
People show the right level of energy without seeming over the top by estimating an energy scale.____
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参考解析
解析:
根据题干可以定位到B段“But how do you project the right level of vigor without seeming over the top? By weighing yourself on an energy scale, and on this scale, more is better.”衡量自己的能量范围,故匹配段落为B。
根据题干可以定位到B段“But how do you project the right level of vigor without seeming over the top? By weighing yourself on an energy scale, and on this scale, more is better.”衡量自己的能量范围,故匹配段落为B。
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D.excess
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共用题干
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共用题干
Green Energy1.Green energy is energy that is produced in a manner that has, less of a negative impact to the environment than energy sources like fossil fuels,which are often produced with harmful side effects."Greener" types of energy that often come to mind are solar,wind,geothermal and hydro energy.There are several more,even including nuclear energy,that is sometimes considered a green energy source because of its lower waste output relative to energy sources such as coal or oil.2.The goal of green energy is generally to create power with as little pollution as possible produced as a by-product. Every form of energy collection will result in some pollution,but those that are green are known to cause less than those that are not. Most people who advocate greener sources of energy claim that the result of worldwide use of green energy will result in the ability to preserve the planet for a longer time.Greenhouse gases,a by-product of traditional sources of energy such as fossil fuels are thought to be causing global warming,or the process of the Earth heating up at an accelerated pace.3.It is not completely necessary for green energy sources to come from places like solar or wind fields,which are examples of green"power plants".A green energy source can be a building that is designed in a way that it keeps itself cool in the daytime and heated in the night through its architectural design rather than having an air-conditioning or a heating system. The conservation of energy through architectural(建筑学的)design becomes, itself, a green energy source. Similarly, many sources of green energy can come directly from the area in which the energy is needed rather than from an outside source.4.One of the goals of green energy technology is to take existing fossil fuel energy technology and clean it up so it is produced more cleanly. One such case is that of clean coal technology,where scientists are trying to find ways to extract energy from coal and other fossil fuels without all of the harmful side effects.The success of such these types of green energy depend upon the ability to extract harmful by-products from fossil fuels while not only being energy efficient,but by being cost efficient as well.Greenhouse gases are thought to be causing______.A:global warmingB:carbon emissionC:lower waste outputD:a green energy sourceE:fossil fuels F: clean fuels
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共用题干
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共用题干
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共用题干
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共用题干
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共用题干
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共用题干
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单选题As they use energy only for motion, a snake can live longer without food than a human being。A
they useB
forC
without foodD
than
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单选题(), the motion would continue indefinitely once it had started.A
Were there loss of energy by frictionB
Since there be loss of energy by frictionC
Were there no loss of energy by frictionD
Should be no loss of energy by friction
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单选题A pump is defined as device that()A
produces pressureB
imparts energy to a fluid to move it from level ‘A’ to level ‘B’C
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is to develop a pressure differential
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quarrelB
suspicionC
verdictD
controversy
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单选题What did Pickens ask the young people to do? A
To demand a national energy plan.B
To fight for their country.C
To end the energy crisis.
考题
填空题Electrifying speakers have an energy several levels higher than the people they are attempting to influence.____
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单选题A centrifugal pump produces flow with a resulting discharge head by energy conversionIt is typical for the energy conversion to follow the order of ().A
mechanical energy to kinetic energy to potential energyB
mechanical energy to potential energy to kinetic energyC
potential energy to mechanical energy to kinetic energyD
kinetic energy to mechanical energy to potential energy
考题
填空题People show the right level of energy without seeming over the top by estimating an energy scale.____
考题
单选题Which of the following statements is NOT true?A
Getting off to work with a minimum effort helps save one's energy.B
Dr. Kleitman doesn't explain why people reach their peaks at different hours of the day.C
Habit helps one adapt to his own energy cycle.D
Children have energy cycles, too.
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