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【单选题】
网络企业的平均收益在如果价格不随产销量而变动时,则此曲线是()A.
平行于X轴的水平直线
B.
平行于Y轴的水平直线
C.
趋于X轴下降的曲线
D.
趋于X轴上升的曲线
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【简答题】阅读理解。 The IEA's World Energy Outlook report says increasing demand and use of energy has to be limited. The switch to more low-carbon energy will require an extra investment (投资) of￡2.7 trillion-about...
【单选题】At the present time, 98 percent of the world energy consumption comes from stored sources, such as fossil fuels or nuclear fuel. Only hydroelectric and wood energy represent completely renewable sourc...
A.
describing a phenomenon and explaining its causes
B.
outlining a position and supporting it with statistics
C.
isolating an ambiguity and clarifying it by definition
D.
presenting a problem and advocating a solution for it
【单选题】According to the passage, the most popular form. of renewable energy in the world is_________
A.
hydroelectric power.
B.
solar energy.
C.
wind powers
D.
tidal power.
【判断题】The world of energy has its unique language that is quite different from the other fields.
A.
正确
B.
错误
【简答题】将下列段落翻译成中文 With the increasing global energy demands in the future, geothermal energy usage is set to increase. There is potential for geothermal developments in many countries all over the world wher...
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