Magna Concursos

Foram encontradas 800 questões.

311393 Ano: 2007
Disciplina: Engenharia Mecânica
Banca: CESGRANRIO
Orgão: REFAP

A liga metálica de Fe e C pode fornecer os produtos:

 

Provas

Questão presente nas seguintes provas
REPORT: BIOFUELS POISED TO DISPLACE OIL

Biofuels such as ethanol and biodiesel can
significantly reduce global dependence on oil, according
to a new report by the Worldwatch Institute.
Last year, world biofuel production surpassed 670,000
barrels per day, the equivalent of about 1 percent of the
global transport fuel market. Although oil still accounts for
more than 96 percent of transport fuel use, biofuel
production has doubled since 2001 and is poised for even
stronger growth as the industry responds to higher fuel
prices and supportive government policies. "Coordinated
action to expand biofuel markets and advance new
technologies could relieve pressure on oil prices while
strengthening agricultural economies and reducing climatealtering
emissions," says Worldwatch Institute President
Christopher Flavin.
Brazil is the world's biofuel leader, with half of its
sugar cane crop providing more than 40 percent of its nondiesel
transport fuel. In the United States, where 15 percent
of the corn crop provides about 2 percent of the non-diesel
transport fuel, ethanol production is growing even more
rapidly. This surging growth may allow the U.S. to overtake
Brazil as the world's biofuel leader this year. Both countries
are now estimated to be producing ethanol at less than
the current cost of gasoline.
Figures cited in the report reveal that biofuels could
provide 37 percent of U.S. transport fuel within the next 25
years, and up to 75 percent if automobile fuel economy
doubles. Biofuels could replace 20-30 percent of the oil
used in European Union countries during the same time
frame.
As the first-ever global assessment of the potential
social and environmental impacts of biofuels, Biofuels for
Transportation warns that the large-scale use of biofuels
carries significant agricultural and ecological risks. "It is
essential that government incentives be used to minimize
competition between food and fuel crops and to discourage
expansion onto ecologically valuable lands," says
Worldwatch Biofuels Project Manager Suzanne Hunt.
However, the report also finds that biofuels have the potential
to increase energy security, create new economic
opportunities in rural areas, and reduce local pollution and
emissions of greenhouse gases.
The long-term potential of biofuels is in the use of
non-food feedstock that include agricultural, municipal, and
forestry wastes as well as fast-growing, cellulose-rich
energy crops such as switchgrass. It is expected that the
combination of cellulosic biomass resources and "nextgeneration"
biofuel conversion technologies will compete
with conventional gasoline and diesel fuel without subsidies
in the medium term.
The report recommends policies to accelerate the
development of biofuels, while maximizing the benefits and
minimizing the risks. Recommendations include:
strengthening the market (i.e. focusing on market
development, infrastructure development, and the building
of transportation fleets that are able to use the new fuels),
speeding the transition to next-generation
technologies allowing for dramatically increased
production at lower cost, and facilitating sustainable
international biofuel trade, developing a true
international market unimpeded by the trade restrictions
in place today.

Worldwatch Institute - June 7, 2006.
Adapted from: http://www.worldwatch.org/node/4079
Based on what Christopher Flavin, President of the Worldwatch Institute, has said, it is possible to state that:
 

Provas

Questão presente nas seguintes provas
REPORT: BIOFUELS POISED TO DISPLACE OIL

Biofuels such as ethanol and biodiesel can
significantly reduce global dependence on oil, according
to a new report by the Worldwatch Institute.
Last year, world biofuel production surpassed 670,000
barrels per day, the equivalent of about 1 percent of the
global transport fuel market. Although oil still accounts for
more than 96 percent of transport fuel use, biofuel
production has doubled since 2001 and is poised for even
stronger growth as the industry responds to higher fuel
prices and supportive government policies. "Coordinated
action to expand biofuel markets and advance new
technologies could relieve pressure on oil prices while
strengthening agricultural economies and reducing climatealtering
emissions," says Worldwatch Institute President
Christopher Flavin.
Brazil is the world's biofuel leader, with half of its
sugar cane crop providing more than 40 percent of its nondiesel
transport fuel. In the United States, where 15 percent
of the corn crop provides about 2 percent of the non-diesel
transport fuel, ethanol production is growing even more
rapidly. This surging growth may allow the U.S. to overtake
Brazil as the world's biofuel leader this year. Both countries
are now estimated to be producing ethanol at less than
the current cost of gasoline.
Figures cited in the report reveal that biofuels could
provide 37 percent of U.S. transport fuel within the next 25
years, and up to 75 percent if automobile fuel economy
doubles. Biofuels could replace 20-30 percent of the oil
used in European Union countries during the same time
frame.
As the first-ever global assessment of the potential
social and environmental impacts of biofuels, Biofuels for
Transportation warns that the large-scale use of biofuels
carries significant agricultural and ecological risks. "It is
essential that government incentives be used to minimize
competition between food and fuel crops and to discourage
expansion onto ecologically valuable lands," says
Worldwatch Biofuels Project Manager Suzanne Hunt.
However, the report also finds that biofuels have the potential
to increase energy security, create new economic
opportunities in rural areas, and reduce local pollution and
emissions of greenhouse gases.
The long-term potential of biofuels is in the use of
non-food feedstock that include agricultural, municipal, and
forestry wastes as well as fast-growing, cellulose-rich
energy crops such as switchgrass. It is expected that the
combination of cellulosic biomass resources and "nextgeneration"
biofuel conversion technologies will compete
with conventional gasoline and diesel fuel without subsidies
in the medium term.
The report recommends policies to accelerate the
development of biofuels, while maximizing the benefits and
minimizing the risks. Recommendations include:
strengthening the market (i.e. focusing on market
development, infrastructure development, and the building
of transportation fleets that are able to use the new fuels),
speeding the transition to next-generation
technologies allowing for dramatically increased
production at lower cost, and facilitating sustainable
international biofuel trade, developing a true
international market unimpeded by the trade restrictions
in place today.

Worldwatch Institute - June 7, 2006.
Adapted from: http://www.worldwatch.org/node/4079
The main purpose of the text is to:
 

Provas

Questão presente nas seguintes provas
Good Stuff? - A Consumption Manifesto:
The Top Ten Principles of Good Consumption
Consumption is one of life's great pleasures. Buying
things we desire, traveling to beautiful places, eating
delectable food: icing on the cake of life. But too often the
effects of our blissful consumption make for a sad story.
Giant cars exhaling dangerous exhaust, hog farms pumping
out harmful pollutants, toxic trash pestering poor
neighborhoods - none of this if there weren't something
to sell.
But there's no need to trade pleasure for guilt. With
thoughtfulness and commitment, consumption can be a force
for good. Through buying what we need, produced the way
we want, we can create the world we'd like to live in.
To that end and for the future, a Consumption Manifesto:
Principle One. Reduce, Reuse, Recycle. This brilliant triad
says it all. Reduce: Avoid buying what you don't need-
and when you do get that dishwasher/lawnmower/toilet,
spend the money up front for an efficient model. Re-use:
Buy used stuff, and wring the last drop of usefulness out of
most everything you own. Recycle: Do it, but know that
it's the last and least effective leg of the triad. (Ultimately,
recycling simply results in the manufacture of more things.)
Principle Two. Stay close to home. Work close to home
to shorten your commute; eat food grown nearby; support
local businesses; join local organizations. All of these will
improve the look, shape, smell, and feel of your community.
Principle Three. Internal combustion engines are polluting,
and their use should be minimized. Period.
Principle Four. Watch what you eat. Whenever possible,
avoid food grown with pesticides, in feedlots, or by
agribusiness. It's an easy way to use your dollars to vote
against the spread of toxins in our bodies, land, and water.
Principle Five. Private industries have very little incentive
to improve their environmental practices. Our consumption
choices must encourage and support good behavior; our
political choices must support government regulation.
Principle Six. Support thoughtful innovations in
manufacturing and production. Hint: Drilling for oil is no
longer an innovation.
Principle Seven. Prioritize. Think hardest when buying
large objects; don't drive yourself mad fretting over the small
ones. It's easy to be distracted by the paper bag puzzle,
but an energy-sucking refrigerator is much more worthy of
your attention. (Small electronics are an exception.)
Principle Eight. Vote. Political engagement enables the
spread of environmentally conscious policies. Without
public action, thoughtful individuals are swimming
upstream.
Principle Nine. Don't feel guilty. It only makes you sad.
Principle Ten. Enjoy what you have-the things that are
yours alone, and the things that belong to none of us. Both
are nice, but the latter are precious. Those things that we
cannot manufacture and should never own-water, air, birds,
trees-are the foundation of life's pleasures. Without them,
we're nothing. With us, there may be nothing left. It's our
choice.
Umbra Fisk, Grist Magazine.
Slightly adapted from: http://www.worldwatch.org/node/1470
Access on June 1, 2007.
The main purpose of this text is to:
 

Provas

Questão presente nas seguintes provas
Good Stuff? - A Consumption Manifesto:
The Top Ten Principles of Good Consumption
Consumption is one of life's great pleasures. Buying
things we desire, traveling to beautiful places, eating
delectable food: icing on the cake of life. But too often the
effects of our blissful consumption make for a sad story.
Giant cars exhaling dangerous exhaust, hog farms pumping
out harmful pollutants, toxic trash pestering poor
neighborhoods - none of this if there weren't something
to sell.
But there's no need to trade pleasure for guilt. With
thoughtfulness and commitment, consumption can be a force
for good. Through buying what we need, produced the way
we want, we can create the world we'd like to live in.
To that end and for the future, a Consumption Manifesto:
Principle One. Reduce, Reuse, Recycle. This brilliant triad
says it all. Reduce: Avoid buying what you don't need-
and when you do get that dishwasher/lawnmower/toilet,
spend the money up front for an efficient model. Re-use:
Buy used stuff, and wring the last drop of usefulness out of
most everything you own. Recycle: Do it, but know that
it's the last and least effective leg of the triad. (Ultimately,
recycling simply results in the manufacture of more things.)
Principle Two. Stay close to home. Work close to home
to shorten your commute; eat food grown nearby; support
local businesses; join local organizations. All of these will
improve the look, shape, smell, and feel of your community.
Principle Three. Internal combustion engines are polluting,
and their use should be minimized. Period.
Principle Four. Watch what you eat. Whenever possible,
avoid food grown with pesticides, in feedlots, or by
agribusiness. It's an easy way to use your dollars to vote
against the spread of toxins in our bodies, land, and water.
Principle Five. Private industries have very little incentive
to improve their environmental practices. Our consumption
choices must encourage and support good behavior; our
political choices must support government regulation.
Principle Six. Support thoughtful innovations in
manufacturing and production. Hint: Drilling for oil is no
longer an innovation.
Principle Seven. Prioritize. Think hardest when buying
large objects; don't drive yourself mad fretting over the small
ones. It's easy to be distracted by the paper bag puzzle,
but an energy-sucking refrigerator is much more worthy of
your attention. (Small electronics are an exception.)
Principle Eight. Vote. Political engagement enables the
spread of environmentally conscious policies. Without
public action, thoughtful individuals are swimming
upstream.
Principle Nine. Don't feel guilty. It only makes you sad.
Principle Ten. Enjoy what you have-the things that are
yours alone, and the things that belong to none of us. Both
are nice, but the latter are precious. Those things that we
cannot manufacture and should never own-water, air, birds,
trees-are the foundation of life's pleasures. Without them,
we're nothing. With us, there may be nothing left. It's our
choice.
Umbra Fisk, Grist Magazine.
Slightly adapted from: http://www.worldwatch.org/node/1470
Access on June 1, 2007.
The sentence "Our consumption choices must encourage and support good behavior" (line 33-34), means that:
 

Provas

Questão presente nas seguintes provas
REPORT: BIOFUELS POISED TO DISPLACE OIL

Biofuels such as ethanol and biodiesel can
significantly reduce global dependence on oil, according
to a new report by the Worldwatch Institute.
Last year, world biofuel production surpassed 670,000
barrels per day, the equivalent of about 1 percent of the
global transport fuel market. Although oil still accounts for
more than 96 percent of transport fuel use, biofuel
production has doubled since 2001 and is poised for even
stronger growth as the industry responds to higher fuel
prices and supportive government policies. "Coordinated
action to expand biofuel markets and advance new
technologies could relieve pressure on oil prices while
strengthening agricultural economies and reducing climatealtering
emissions," says Worldwatch Institute President
Christopher Flavin.
Brazil is the world's biofuel leader, with half of its
sugar cane crop providing more than 40 percent of its nondiesel
transport fuel. In the United States, where 15 percent
of the corn crop provides about 2 percent of the non-diesel
transport fuel, ethanol production is growing even more
rapidly. This surging growth may allow the U.S. to overtake
Brazil as the world's biofuel leader this year. Both countries
are now estimated to be producing ethanol at less than
the current cost of gasoline.
Figures cited in the report reveal that biofuels could
provide 37 percent of U.S. transport fuel within the next 25
years, and up to 75 percent if automobile fuel economy
doubles. Biofuels could replace 20-30 percent of the oil
used in European Union countries during the same time
frame.
As the first-ever global assessment of the potential
social and environmental impacts of biofuels, Biofuels for
Transportation warns that the large-scale use of biofuels
carries significant agricultural and ecological risks. "It is
essential that government incentives be used to minimize
competition between food and fuel crops and to discourage
expansion onto ecologically valuable lands," says
Worldwatch Biofuels Project Manager Suzanne Hunt.
However, the report also finds that biofuels have the potential
to increase energy security, create new economic
opportunities in rural areas, and reduce local pollution and
emissions of greenhouse gases.
The long-term potential of biofuels is in the use of
non-food feedstock that include agricultural, municipal, and
forestry wastes as well as fast-growing, cellulose-rich
energy crops such as switchgrass. It is expected that the
combination of cellulosic biomass resources and "nextgeneration"
biofuel conversion technologies will compete
with conventional gasoline and diesel fuel without subsidies
in the medium term.
The report recommends policies to accelerate the
development of biofuels, while maximizing the benefits and
minimizing the risks. Recommendations include:
strengthening the market (i.e. focusing on market
development, infrastructure development, and the building
of transportation fleets that are able to use the new fuels),
speeding the transition to next-generation
technologies allowing for dramatically increased
production at lower cost, and facilitating sustainable
international biofuel trade, developing a true
international market unimpeded by the trade restrictions
in place today.

Worldwatch Institute - June 7, 2006.
Adapted from: http://www.worldwatch.org/node/4079
Some of the benefits of the increase in biofuel production listed by the author are:
 

Provas

Questão presente nas seguintes provas
311387 Ano: 2007
Disciplina: Inglês (Língua Inglesa)
Banca: CESGRANRIO
Orgão: REFAP
REPORT: BIOFUELS POISED TO DISPLACE OIL

Biofuels such as ethanol and biodiesel can
significantly reduce global dependence on oil, according
to a new report by the Worldwatch Institute.
Last year, world biofuel production surpassed 670,000
barrels per day, the equivalent of about 1 percent of the
global transport fuel market. Although oil still accounts for
more than 96 percent of transport fuel use, biofuel
production has doubled since 2001 and is poised for even
stronger growth as the industry responds to higher fuel
prices and supportive government policies. "Coordinated
action to expand biofuel markets and advance new
technologies could relieve pressure on oil prices while
strengthening agricultural economies and reducing climatealtering
emissions," says Worldwatch Institute President
Christopher Flavin.
Brazil is the world's biofuel leader, with half of its
sugar cane crop providing more than 40 percent of its nondiesel
transport fuel. In the United States, where 15 percent
of the corn crop provides about 2 percent of the non-diesel
transport fuel, ethanol production is growing even more
rapidly. This surging growth may allow the U.S. to overtake
Brazil as the world's biofuel leader this year. Both countries
are now estimated to be producing ethanol at less than
the current cost of gasoline.
Figures cited in the report reveal that biofuels could
provide 37 percent of U.S. transport fuel within the next 25
years, and up to 75 percent if automobile fuel economy
doubles. Biofuels could replace 20-30 percent of the oil
used in European Union countries during the same time
frame.
As the first-ever global assessment of the potential
social and environmental impacts of biofuels, Biofuels for
Transportation warns that the large-scale use of biofuels
carries significant agricultural and ecological risks. "It is
essential that government incentives be used to minimize
competition between food and fuel crops and to discourage
expansion onto ecologically valuable lands," says
Worldwatch Biofuels Project Manager Suzanne Hunt.
However, the report also finds that biofuels have the potential
to increase energy security, create new economic
opportunities in rural areas, and reduce local pollution and
emissions of greenhouse gases.
The long-term potential of biofuels is in the use of
non-food feedstock that include agricultural, municipal, and
forestry wastes as well as fast-growing, cellulose-rich
energy crops such as switchgrass. It is expected that the
combination of cellulosic biomass resources and "nextgeneration"
biofuel conversion technologies will compete
with conventional gasoline and diesel fuel without subsidies
in the medium term.
The report recommends policies to accelerate the
development of biofuels, while maximizing the benefits and
minimizing the risks. Recommendations include:
strengthening the market (i.e. focusing on market
development, infrastructure development, and the building
of transportation fleets that are able to use the new fuels),
speeding the transition to next-generation
technologies allowing for dramatically increased
production at lower cost, and facilitating sustainable
international biofuel trade, developing a true
international market unimpeded by the trade restrictions
in place today.

Worldwatch Institute - June 7, 2006.
Adapted from: http://www.worldwatch.org/node/4079
Mark the option that contains a recommendation included in the report.
 

Provas

Questão presente nas seguintes provas
enunciado 311386-1
enunciado 311386-2
“This surging growth...” (line 21) refers to:
 

Provas

Questão presente nas seguintes provas
311385 Ano: 2007
Disciplina: Inglês (Língua Inglesa)
Banca: CESGRANRIO
Orgão: REFAP
REPORT: BIOFUELS POISED TO DISPLACE OIL

Biofuels such as ethanol and biodiesel can
significantly reduce global dependence on oil, according
to a new report by the Worldwatch Institute.
Last year, world biofuel production surpassed 670,000
barrels per day, the equivalent of about 1 percent of the
global transport fuel market. Although oil still accounts for
more than 96 percent of transport fuel use, biofuel
production has doubled since 2001 and is poised for even
stronger growth as the industry responds to higher fuel
prices and supportive government policies. "Coordinated
action to expand biofuel markets and advance new
technologies could relieve pressure on oil prices while
strengthening agricultural economies and reducing climatealtering
emissions," says Worldwatch Institute President
Christopher Flavin.
Brazil is the world's biofuel leader, with half of its
sugar cane crop providing more than 40 percent of its nondiesel
transport fuel. In the United States, where 15 percent
of the corn crop provides about 2 percent of the non-diesel
transport fuel, ethanol production is growing even more
rapidly. This surging growth may allow the U.S. to overtake
Brazil as the world's biofuel leader this year. Both countries
are now estimated to be producing ethanol at less than
the current cost of gasoline.
Figures cited in the report reveal that biofuels could
provide 37 percent of U.S. transport fuel within the next 25
years, and up to 75 percent if automobile fuel economy
doubles. Biofuels could replace 20-30 percent of the oil
used in European Union countries during the same time
frame.
As the first-ever global assessment of the potential
social and environmental impacts of biofuels, Biofuels for
Transportation warns that the large-scale use of biofuels
carries significant agricultural and ecological risks. "It is
essential that government incentives be used to minimize
competition between food and fuel crops and to discourage
expansion onto ecologically valuable lands," says
Worldwatch Biofuels Project Manager Suzanne Hunt.
However, the report also finds that biofuels have the potential
to increase energy security, create new economic
opportunities in rural areas, and reduce local pollution and
emissions of greenhouse gases.
The long-term potential of biofuels is in the use of
non-food feedstock that include agricultural, municipal, and
forestry wastes as well as fast-growing, cellulose-rich
energy crops such as switchgrass. It is expected that the
combination of cellulosic biomass resources and "nextgeneration"
biofuel conversion technologies will compete
with conventional gasoline and diesel fuel without subsidies
in the medium term.
The report recommends policies to accelerate the
development of biofuels, while maximizing the benefits and
minimizing the risks. Recommendations include:
strengthening the market (i.e. focusing on market
development, infrastructure development, and the building
of transportation fleets that are able to use the new fuels),
speeding the transition to next-generation
technologies allowing for dramatically increased
production at lower cost, and facilitating sustainable
international biofuel trade, developing a true
international market unimpeded by the trade restrictions
in place today.

Worldwatch Institute - June 7, 2006.
Adapted from: http://www.worldwatch.org/node/4079
According to paragraphs 2 and 3:
 

Provas

Questão presente nas seguintes provas
REPORT: BIOFUELS POISED TO DISPLACE OIL

Biofuels such as ethanol and biodiesel can
significantly reduce global dependence on oil, according
to a new report by the Worldwatch Institute.
Last year, world biofuel production surpassed 670,000
barrels per day, the equivalent of about 1 percent of the
global transport fuel market. Although oil still accounts for
more than 96 percent of transport fuel use, biofuel
production has doubled since 2001 and is poised for even
stronger growth as the industry responds to higher fuel
prices and supportive government policies. "Coordinated
action to expand biofuel markets and advance new
technologies could relieve pressure on oil prices while
strengthening agricultural economies and reducing climatealtering
emissions," says Worldwatch Institute President
Christopher Flavin.
Brazil is the world's biofuel leader, with half of its
sugar cane crop providing more than 40 percent of its nondiesel
transport fuel. In the United States, where 15 percent
of the corn crop provides about 2 percent of the non-diesel
transport fuel, ethanol production is growing even more
rapidly. This surging growth may allow the U.S. to overtake
Brazil as the world's biofuel leader this year. Both countries
are now estimated to be producing ethanol at less than
the current cost of gasoline.
Figures cited in the report reveal that biofuels could
provide 37 percent of U.S. transport fuel within the next 25
years, and up to 75 percent if automobile fuel economy
doubles. Biofuels could replace 20-30 percent of the oil
used in European Union countries during the same time
frame.
As the first-ever global assessment of the potential
social and environmental impacts of biofuels, Biofuels for
Transportation warns that the large-scale use of biofuels
carries significant agricultural and ecological risks. "It is
essential that government incentives be used to minimize
competition between food and fuel crops and to discourage
expansion onto ecologically valuable lands," says
Worldwatch Biofuels Project Manager Suzanne Hunt.
However, the report also finds that biofuels have the potential
to increase energy security, create new economic
opportunities in rural areas, and reduce local pollution and
emissions of greenhouse gases.
The long-term potential of biofuels is in the use of
non-food feedstock that include agricultural, municipal, and
forestry wastes as well as fast-growing, cellulose-rich
energy crops such as switchgrass. It is expected that the
combination of cellulosic biomass resources and "nextgeneration"
biofuel conversion technologies will compete
with conventional gasoline and diesel fuel without subsidies
in the medium term.
The report recommends policies to accelerate the
development of biofuels, while maximizing the benefits and
minimizing the risks. Recommendations include:
strengthening the market (i.e. focusing on market
development, infrastructure development, and the building
of transportation fleets that are able to use the new fuels),
speeding the transition to next-generation
technologies allowing for dramatically increased
production at lower cost, and facilitating sustainable
international biofuel trade, developing a true
international market unimpeded by the trade restrictions
in place today.

Worldwatch Institute - June 7, 2006.
Adapted from: http://www.worldwatch.org/node/4079
According to the text, Brazil:
 

Provas

Questão presente nas seguintes provas