The energy stored in coal ______.
第1题:
The heat that is produced by burning garbage can be used to______.
A. make electricity
B. make energy source
C. boil water
D. save coal
第2题:
Before doing any work on a hydraulic system equipped with accumulators, you should
A.drain the accumulators and purge with oxygen
B.bleed off all stored energy from the accumulators completely
C.charge the accumulators to prevent system energy loss
D.pump the hydraulic fluid into the accumulators to prevent fluid loss
第3题:
As there is less and less coal and oil, scientists are exploring new ways of making use of ____ energy, such as sunlight, wind and water for power and fuel.
A. primary B. alternative C. instant D. unique
第4题:
第5题:
第6题:
A 、one-thind
B、one-fourth
C、one-fth
D、two-thinds
第7题:
第8题:
Besides climate change, developing countries like China need to deal with energy【21】and environmental issues: the development of sources of clean energy needs to be【22】line with their interests. Clean energy has been given greater prominence than ever before; it is seen as a new industrial【23】and【24】of economic growth for the new century. The time for clean energy has come.
In China, clean energy is moving ahead at full speed. Take wind power as an example: by the end of last year, China had【25】wind power generating capacity of 12. 21GW, making China the largest wind power generator in Asia and fourth in the world. But according to the research, one-third of wind power capacity is running【26】due to an inability to get the power to the national【27】.
India-like China—relies【28】on coal for its energy needs. This will only change if the funds and technology to develop clean energy, such as wind and nuclear power, are【29】. India will not choose clean energy【30】. Nuclear power is currently the most【31】of clean energy sources.【32】, if it is to be【33】on a large scale by developing nations, technological advances will be needed to make it competitive with coal.
Compared【34】developed countries, developing countries have more【35】choices when it comes to energy structure. Promoting economic growth requires【36】energy—and coal, the cheapest and most【37】source of energy for many countries—is the【38】choice. Cheap coal means cheap electricity and a competitive economy. Rising electricity prices would cause public【39】and impact on standards of【40】.
(21)
A.scarce
B.scare
C.scarcity
D.scary
第9题:
第10题: