Question

O texto a seguir é referência para as questões 73 a 77. Cabin Environment 1 There is an erroneous perception that the cabin environment of a pressurized aircraft is bad. That is not true. Treated by 2 HEPA (High Efficiency Particulate Arrestance) filters - similar to those used in organ transplanting and burn hospital units - the air 3 in airplane cabins is climatized and dehydrated, which makes the environment free from fungi and bacteria and - because the air 4 relative humidity becomes very low - even protects the existing airborne electronic equipment (avionics). The air flow is directed 5 downwards, thus reducing the rate of contamination between seats. Additionally, all of the cabin air is replaced every three minutes. 6 This will keep the oxygen rates throughout the aircraft at much higher levels than those required by human consumption, and 7 carbon dioxide and particulate matter at acceptable levels with respect to passenger safety, health and comfort. (Adaptado de: TAM magazine, ano 3, n° 34, dez. 2006.) According to the text: -) Human beings need more oxygen when they are inside an aircraft. -) The levels of carbon dioxide inside the cabin have to be reduced to avoid contamination between the seats. -) The air that circulates inside a pressurized airplane cabin has very good quality. -) Air filters used in airplane cabins are adapted from organ transplanting units. -) The airflow circulates in all directions to assure all passengers get the same amount of air. Resposta correta:The air that circulates inside a pressurized airplane cabin has very good quality.

Answer 1

Olá!!! Bom vamos lá!

Ao lermos o texto temos que o ar presente na cabine é de uma ótima qualidade, ele nos deixa claro isso logo no começo do texto, sendo assim ele continua desenvolvendo a ideia dizendo até mesmo que é melhor que o ar que respiramos aqui fora, além disso temos todo um sistema de climatizadores e anti fungicidas e bactericidas que faz com que os passageiros consigam ter o melhor dentro do avião.

Sendo assim podemos concluir que a alternativa correta é a letra C, como foi citado por você mesmo : "The air that circulates inside a pressurized airplane cabin has very good quality" isso confere com tudo que falamos acima.

Espero ter ajudado !