Foram encontradas 120 questões.
Paulo, Mauro e Arnaldo estão embarcando em um voo para Londres. Sabe-se que:
- os números de suas poltronas são C2, C3 e C4;
- a idade de um deles é 35 anos e a de outro, 22 anos;
- Paulo é o mais velho dos três e sua poltrona não é C4;
- a poltrona C3 pertence ao de idade intermediária;
- a idade de Arnaldo não é 22 anos.
Com base nessas informações, julgue o item seguinte.
Se a soma das idades dos três passageiros for 75 anos, então as idades de Paulo, Mauro e Arnaldo serão, respectivamente, 35, 22 e 18 anos.
Provas
Questão presente nas seguintes provas
Em determinado dia, em um aeroporto, os aviões A, B, C, D e E estavam esperando o momento da decolagem, que, por más condições de tempo, iria começar às 10 horas daquele dia. Ficou determinado que cada voo ocorreria cinco minutos após o anterior, que A decolaria após C e que E decolaria 5 minutos antes de B.
Com base nessas informações, julgue o item a seguir.
Se o avião D decolar antes dos aviões B ou de C, então ele deverá ser o primeiro dos cinco a decolar.
Provas
Questão presente nas seguintes provas
Em determinado dia, em um aeroporto, os aviões A, B, C, D e E estavam esperando o momento da decolagem, que, por más condições de tempo, iria começar às 10 horas daquele dia. Ficou determinado que cada voo ocorreria cinco minutos após o anterior, que A decolaria após C e que E decolaria 5 minutos antes de B.
Com base nessas informações, julgue o item a seguir.
Se, às 10 h 12 min, os aviões A e D já estiverem voando, então a próxima decolagem, marcada para as 10 h 15min, será do avião C.
Provas
Questão presente nas seguintes provas
Em determinado dia, em um aeroporto, os aviões A, B, C, D e E estavam esperando o momento da decolagem, que, por más condições de tempo, iria começar às 10 horas daquele dia. Ficou determinado que cada voo ocorreria cinco minutos após o anterior, que A decolaria após C e que E decolaria 5 minutos antes de B.
Com base nessas informações, julgue o item a seguir.
Se B decolar antes de A e após C, então C decolará antes de E.
Provas
Questão presente nas seguintes provas
Shifting gears
That jet engines have evolved over the past few decades will be apparent to any seasoned air traveller. Early jet engines had narrow inlets and were very noisy, but as the diameter of the fans at the front increased, the engines became quieter. Compared with a rowdy 1960s jet, a modern turbofan is some 80% quieter and burns as little as half as much fuel — thus producing fewer greenhouse gases.
The aviation industry has set itself a tough target: a 50% reduction in fuel consumption by 2020, to cut CO2 emissions in half. The solution devised by Pratt & Whitney (P&W), a division of United Technologies, is a “geared turbofan” engine called the PurePower PW1000G.
Some airlines, however, are wary of gearboxes. They worry that replacing a simple shaft with a complex gearbox will increase maintenance costs and make it more likely that something will go wrong.
Internet: <www.economist.com> (adapted).
Judge the following item about the ideas and the linguistic structures of the text above.
In “Some airlines, however, are wary of gearboxes”, “wary” is synonymous with cautious.
Provas
Questão presente nas seguintes provas
Shifting gears
That jet engines have evolved over the past few decades will be apparent to any seasoned air traveller. Early jet engines had narrow inlets and were very noisy, but as the diameter of the fans at the front increased, the engines became quieter. Compared with a rowdy 1960s jet, a modern turbofan is some 80% quieter and burns as little as half as much fuel — thus producing fewer greenhouse gases.
The aviation industry has set itself a tough target: a 50% reduction in fuel consumption by 2020, to cut CO2 emissions in half. The solution devised by Pratt & Whitney (P&W), a division of United Technologies, is a “geared turbofan” engine called the PurePower PW1000G.
Some airlines, however, are wary of gearboxes. They worry that replacing a simple shaft with a complex gearbox will increase maintenance costs and make it more likely that something will go wrong.
Internet: <www.economist.com> (adapted).
Judge the following item about the ideas and the linguistic structures of the text above.
The word “rowdy” is synonymous with quiet.
Provas
Questão presente nas seguintes provas
Shifting gears
That jet engines have evolved over the past few decades will be apparent to any seasoned air traveller. Early jet engines had narrow inlets and were very noisy, but as the diameter of the fans at the front increased, the engines became quieter. Compared with a rowdy 1960s jet, a modern turbofan is some 80% quieter and burns as little as half as much fuel — thus producing fewer greenhouse gases.
The aviation industry has set itself a tough target: a 50% reduction in fuel consumption by 2020, to cut CO2 emissions in half. The solution devised by Pratt & Whitney (P&W), a division of United Technologies, is a “geared turbofan” engine called the PurePower PW1000G.
Some airlines, however, are wary of gearboxes. They worry that replacing a simple shaft with a complex gearbox will increase maintenance costs and make it more likely that something will go wrong.
Internet: <www.economist.com> (adapted).
Judge the following item about the ideas and the linguistic structures of the text above.
Besides producing fewer greenhouse gases, a modern turbofan is about 80% quieter than 1960 jets.
Provas
Questão presente nas seguintes provas
Shifting gears
That jet engines have evolved over the past few decades will be apparent to any seasoned air traveller. Early jet engines had narrow inlets and were very noisy, but as the diameter of the fans at the front increased, the engines became quieter. Compared with a rowdy 1960s jet, a modern turbofan is some 80% quieter and burns as little as half as much fuel — thus producing fewer greenhouse gases.
The aviation industry has set itself a tough target: a 50% reduction in fuel consumption by 2020, to cut CO2 emissions in half. The solution devised by Pratt & Whitney (P&W), a division of United Technologies, is a “geared turbofan” engine called the PurePower PW1000G.
Some airlines, however, are wary of gearboxes. They worry that replacing a simple shaft with a complex gearbox will increase maintenance costs and make it more likely that something will go wrong.
Internet: <www.economist.com> (adapted).
Judge the following item about the ideas and the linguistic structures of the text above.
The aviation industry will have a 50% reduction in fuel consumption by 2020, thus cutting CO2 emissions in half.
Provas
Questão presente nas seguintes provas
Off the radar screen
Days after Air France’s ill-fated Airbus A330 plunged mysteriously into the southern Atlantic Ocean four hours after leaving Rio de Janeiro for Paris on May 31st, rescuers were still searching for debris.
The wreckage is thought to lie up to some 3,700 metres below the waves, possibly in one of the many trenches that riddle the rocky undersea mountain range west of the Mid-Atlantic Ridge. Its exact location may not be known for several weeks.
One of the hazards of flying over oceans is the lack of radar coverage. Even the latest radar equipment can reach out no more than 550 kilometres (300 nautical miles) from land. Once out of radar range, pilots flying intercontinental routes make scheduled radio contact every half an hour or so with air-traffic control stations, behind or ahead of them, to report their positions. The rest of the time, no one knows exactly where they are.
A number of countries, especially those surrounded by oceans or by vast expanses of rugged wilderness are none too happy with this. America, Australia and Canada have been among the most active proponents of satellite navigation for commercial aircraft.
The Canadian authorities began operation of such a system in January. It uses what is known in aviation circles as ADS-B, short for automatic dependent surveillance-broadcast. The technology combines the precise position of the aircraft, as identified by global-positioning satellites, with data about its flight number, speed, direction and attitude (whether it is climbing, descending or turning).
Although ADS-B would not have prevented the crash into the Atlantic Ocean, it might well have helped locate the debris more quickly. Knowing the exact location of the accident would allow rescue craft to be on the scene within hours, pulling any survivors from the water. That too would be a great benefit of the new air-traffic-control technology.
Internet: <www.economist.com> (adapted).
Judge the following item about the ideas and the linguistic structures of the text above.
The wreckage exact location is already known.
Provas
Questão presente nas seguintes provas
Off the radar screen
Days after Air France’s ill-fated Airbus A330 plunged mysteriously into the southern Atlantic Ocean four hours after leaving Rio de Janeiro for Paris on May 31st, rescuers were still searching for debris.
The wreckage is thought to lie up to some 3,700 metres below the waves, possibly in one of the many trenches that riddle the rocky undersea mountain range west of the Mid-Atlantic Ridge. Its exact location may not be known for several weeks.
One of the hazards of flying over oceans is the lack of radar coverage. Even the latest radar equipment can reach out no more than 550 kilometres (300 nautical miles) from land. Once out of radar range, pilots flying intercontinental routes make scheduled radio contact every half an hour or so with air-traffic control stations, behind or ahead of them, to report their positions. The rest of the time, no one knows exactly where they are.
A number of countries, especially those surrounded by oceans or by vast expanses of rugged wilderness are none too happy with this. America, Australia and Canada have been among the most active proponents of satellite navigation for commercial aircraft.
The Canadian authorities began operation of such a system in January. It uses what is known in aviation circles as ADS-B, short for automatic dependent surveillance-broadcast. The technology combines the precise position of the aircraft, as identified by global-positioning satellites, with data about its flight number, speed, direction and attitude (whether it is climbing, descending or turning).
Although ADS-B would not have prevented the crash into the Atlantic Ocean, it might well have helped locate the debris more quickly. Knowing the exact location of the accident would allow rescue craft to be on the scene within hours, pulling any survivors from the water. That too would be a great benefit of the new air-traffic-control technology.
Internet: <www.economist.com> (adapted).
Judge the following item about the ideas and the linguistic structures of the text above.
The word “wreckage” refers to the remaining parts of something that has been wrecked.
Provas
Questão presente nas seguintes provas
Cadernos
Caderno Container