Cabin Environment
There is an erroneous perception that the cabin environment of a pressurized aircraft 1 is bad. That is not true. Treated by
HEPA (High Efficiency Particulate Arrestance) filters – similar to those used in organ transplanting and burn hospital units – the air
in airplane cabins is climatized and dehydrated, which makes the environment free from fungi and bacteria and - because the air
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.
This will keep the oxygen rates throughout the aircraft at much higher levels than those required by human consumption, and
carbon dioxide and particulate matter at acceptable levels with respect to passenger safety, health and comfort.
(Adaptado de: TAM magazine, ano 3, nº 34, dez. 2006.)
Consider the following consequences:
1. Bacteria are eliminated.
2. Air humidity becomes low.
3. The environment is subject to risk.
4. Passengers become healthier.
5. Aircraft equipment may be exposed to danger.
6. Air becomes dehydrated.
Which sentences refer to consequences of using HEPA filters in aircraft cabins?
Cabin Environment
There is an erroneous perception that the cabin environment of a pressurized aircraft 1 is bad. That is not true. Treated by
HEPA (High Efficiency Particulate Arrestance) filters – similar to those used in organ transplanting and burn hospital units – the air
in airplane cabins is climatized and dehydrated, which makes the environment free from fungi and bacteria and - because the air
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.
This will keep the oxygen rates throughout the aircraft at much higher levels than those required by human consumption, and
carbon dioxide and particulate matter at acceptable levels with respect to passenger safety, health and comfort.
(Adaptado de: TAM magazine, ano 3, nº 34, dez. 2006.)
According to the text:
Cabin Environment
There is an erroneous perception that the cabin environment of a pressurized aircraft 1 is bad. That is not true. Treated by
HEPA (High Efficiency Particulate Arrestance) filters – similar to those used in organ transplanting and burn hospital units – the air
in airplane cabins is climatized and dehydrated, which makes the environment free from fungi and bacteria and - because the air
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.
This will keep the oxygen rates throughout the aircraft at much higher levels than those required by human consumption, and
carbon dioxide and particulate matter at acceptable levels with respect to passenger safety, health and comfort.
(Adaptado de: TAM magazine, ano 3, nº 34, dez. 2006.)
Consider the following sentences:
1. It is generally believed that the air that passengers breathe inside an airplane cabin is unhealthy.
2. Low humidity contributes to free the air from fungi and bacteria.
3. The treatment of the air inside a pressurized cabin helps to maintain avionics.
4. The levels of oxygen rates inside the aircraft tend to be unbearable when passengers leave the airplane.
According to the text:
Cabin Environment
There is an erroneous perception that the cabin environment of a pressurized aircraft 1 is bad. That is not true. Treated by
HEPA (High Efficiency Particulate Arrestance) filters – similar to those used in organ transplanting and burn hospital units – the air
in airplane cabins is climatized and dehydrated, which makes the environment free from fungi and bacteria and - because the air
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.
This will keep the oxygen rates throughout the aircraft at much higher levels than those required by human consumption, and
carbon dioxide and particulate matter at acceptable levels with respect to passenger safety, health and comfort.
(Adaptado de: TAM magazine, ano 3, nº 34, dez. 2006.)
Consider the following information:
1. The level of oxygen rates required by human consumption.
2. The time it takes for air to be replaced inside an aircraft cabin.
3. The company that makes the filters used in aircrafts.
4. The direction of the airflow inside pressurized cabins.
What information is in the text?
Cabin Environment
There is an erroneous perception that the cabin environment of a pressurized aircraft 1 is bad. That is not true. Treated by
HEPA (High Efficiency Particulate Arrestance) filters – similar to those used in organ transplanting and burn hospital units – the air
in airplane cabins is climatized and dehydrated, which makes the environment free from fungi and bacteria and - because the air
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.
This will keep the oxygen rates throughout the aircraft at much higher levels than those required by human consumption, and
carbon dioxide and particulate matter at acceptable levels with respect to passenger safety, health and comfort.
(Adaptado de: TAM magazine, ano 3, nº 34, dez. 2006.)
Which alternative can replace “thus” (line 5) in the text without changing the meaning?
[1] According to archeologists and anthropologists, the earliest clothing probably 1 consisted of fur, leather, leaves or grass, draped,
wrapped or tied about the body for protection from the elements. Knowledge of such clothing remains inferential, since clothing
materials deteriorate quickly compared to stone, bone, shell and metal artifacts. Archeologists have identified very early sewing
needles of bone and ivory from about 30,000 BC, found near Kostenki, Russia, in 1988.
(http://en.wikipedia.org/wiki/clothing)
Consider the following information:
1. The different materials that clothes were probably made of in far past.
2. The processes of making woven fabrics used in clothing.
3. The reason people wore clothes.
4. The year when some ancient sewing needles were found.
What information is in the text?