Foram encontradas 175 questões.
Big Macs, the dollar and the yuan
You know how it is –- you’re in a strange city, maybe a strange country, tired, hungry, missing home, it’s kind of late. You walk into that little (in my case, Chinese restaurant), there are teeth marks on the chopsticks, the floor is kind of sticky, and on the menu is the house specialty: rabbit face. Not quite what you wanted, but as luck would have it, just down the road you can see it in the distance – the golden arches, sitting high and proud calling to you.
OK, this might be (in my case) China, but you know that somehow, once you walk through those doors, there on the menu will be a cheeseburger, a Big Mac, Quarter Pounder and fries. And for the most part the food will taste pretty much like the Mickey Dee’s on Santa Monica not far from my old apartment in LA.
So, when I buy my Big Mac here in China, it’s just over 12 RMB, or $1.76. When I buy a Big Mac in L.A. it costs around $3.50. The great thing about a Big Mac as far as economists are concerned (well, the ones at “The Economist” magazine, anyway) is that it’s pretty much the same wherever you go . . . two all-beef patties, special sauce, lettuce, cheese, pickles, onions on a sesame seed bun.
And that means for economists it’s a great way to compare currencies. Much like the Big Mac itself, it’s not perfect – wages, rents and other costs vary, as well as the size (I have noticed the Chinese burgers a little on the small side). But for more than 20 years the people at “The Economist”____ ____ ____ this exchange rate comparison, and – surprise, surprise – they found Asian currencies under-valued, European over-valued.
In the case of China, by about 40 percent undervalued – this is at the far end of the spectrum as far as many critics in the U.S. are concerned. They accuse Beijing of deliberately manipulating the currency, keeping it undervalued. That means exports from China are a lot cheaper, giving exporters here an unfair competitive
advantage, they claim.
Imagine if you could go to that McDonald’s in L.A. and instead of paying $3.50 or so for the American Big Mac, you could pay $1.76 for the Chinese version, knowing the ingredients are the same.
Fonte: cnn.com
According to the text, a Big Mac in L.A. is:
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De acordo com a norma NBR 15526/2007, que trata do projeto e execução das instalações internas de gás natural, a primeira etapa do ensaio de estanqueidade deve ser realizada sob pressão mínima de
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Dadas as afirmações,
I. A exatidão define o grau de concordância entre o resultado de uma medição e um valor verdadeiro do mensurando.
II. Exatidão é um conceito qualitativo.
III. A precisão define o grau de concordância entre resultados de medição obtidos sob as mesmas condições.
IV. Precisão é um conceito qualitativo.
verifica-se que estão corretas
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Com relação às classes de incêndio, não é correto afirmar:
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Se enchermos um recipiente de 20cm de altura com água, cuja densidade é aproximadamente !$ 1,00g/cm^3 !$, e sob essa água depositarmos um corpo esférico de 5cm de diâmetro cuja densidade vale !$ 0,89g/cm^3 !$, pode-se afirmar que
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Um grupo de soldados estava treinando para uma parada militar. Ao organizá-los para o desfile, o tenente observou que:
• Organizando-os em filas contendo 2 soldados, sobrava uma fila com apenas um soldado.
• Organizando-os em filas contendo 3 soldados, sobrava uma fila com apenas um soldado.
• Organizando-os em filas contendo 4 soldados, sobrava uma fila com apenas um soldado.
• Quando ele organizou os soldados em filas contendo 5 soldados, todas as filas foram preenchidas.
Se o número de soldados deste grupo é maior que trinta e menor que cem, podemos dizer que o número de soldados deste grupo é
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A evolução do marketing de massa para o eletrônico seguiu a sequência:
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A CLEANING THAT CAN STAVE OFF THE FLU
A host of recent studies have highlighted the importance and the scientific underpinning of a most basic hygiene measure. One of the most graphic was done at the University of California, Berkeley, where researchers focused video cameras on 10 college students as they read and typed on their laptops.
The scientists counted the times the students touched their faces, documenting every lip scratch, eye rub and nose pick. On average, the students touched their eyes, noses and lips 47 times during a three-hour period, once every four minutes. Hand-to-face contact has a surprising impact on health. Germs can enter the body through breaks in the skin or through the membranes of the eyes, mouth and nose.
During the eight-week study period, students in the dorms with ready access to hand sanitizers had a third fewer complaints of coughs, chest congestion and fever. Over all, the risk of getting sick was 20 percent lower in the dorms where hand hygiene was emphasized, and those students missed 43 percent fewer days of school.
Better hand hygiene also appears to make a difference in the home, lowering the risk to other family members when one child is sick. In homes with hand sanitizers, the risk of catching a gastrointestinal illness from a sick child dropped 60 percent compared with the other families.
Regular soap and water and alcohol-based hand sanitizers are both effective in eliminating the H1N1 virus from the hands.
Frequent hand washing will not eliminate risk. When an infected person coughs or sneezes, a bystander might be splattered by large droplets or may inhale airborne particles. Still, it is a good idea to wash your hands regularly even if you’re not in contact people who are obviously ill.
For all those reasons, the Centers for Disease Control and Prevention, with other health organizations around the world, urge frequent hand washing with soap and water or alcohol-based hand sanitizers. (They also repeat some advice you may not have heard from your mother: cough or sneeze into the crook of your elbow, not your bare hands.)
Article published at The New York Times, September, 14 2009. The text was adapted for this test.
According to the text, in order to develop their studies, researches developed research with:
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Pode-se afirmar que o objetivo principal da calibração de um instrumento de mediçao é verificar se a medida obtida pelo equipamento é compatível com o esperado da medição e se o mesmo está adequado para a atividade a que se destina. O resultado de uma calibração é normalmente registrado em
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Define-se incerteza de medição como sendo
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