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Julgue o próximo item, referentes à resistência dos materiais.
A deformação é uma grandeza adimensional, com valor
positivo para alongamentos e negativo para contração.
Julgue o próximo item, referentes à resistência dos materiais.
Em geral existem seis componentes independentes da tensão
em cada ponto do corpo, consistindo de três tensões normais
e três tensões cisalhantes.
Julgue o próximo item, referentes à resistência dos materiais.
O diagrama de corpo livre é uma das maneiras mais
utilizadas para representar as forças presentes sobre um
corpo.
A função do anel de desgaste em bombas centrífugas é de manter o balanceamento do rotor.
A curva característica de uma instalação de bombeamento informa a altura manométrica necessária que a bomba precisa para elevar uma determinada vazão.
As bombas peristálticas, de lóbulos ou de palhetas são classificadas como bombas de deslocamento positivo.
O distribuidor é o mecanismo responsável por controlar a vazão de entrada na turbina, de modo a compatibilizar a potência motriz da turbina com a potência demandada.
Em uma turbina Francis, o tubo de sucção tem a função principal de evitar o efeito de cavitação, recuperando a pressão na saída turbina.
A energia total que um líquido pode conter é divida em energia de posição, energia de pressão e energia cinética.
Judge the following item, based on the previous text.
According to the text, the speculations about extraterrestrial
life started in the late 1800s due to canal-like features
observed on Mars.
Judge the following item, based on the previous text.
The War of the Worlds was a radio drama that told the real
story of an invasion from Mars, panicking countless people.
Judge the following item, based on the previous text.
In the last sentence of the last paragraph, the word “prickly”
means peaceful.
Considering the previous text, judge the following item.
Although there is a movement of people ditching their
smartphones in order to have what they think is a better life
quality, millions believe digital technology is essential to
everyone’s lives.
Considering the previous text, judge the following item.
It was when Dulcie Cowling was in the park with her two
kids that she took her decision to ditch her smartphone and
then she told her family and friends about it after Christmas.
Considering the previous text, judge the following item.
People who are giving up on their mobile devices believe
they were spending too much time with being connected and
they were missing their real lives because of that.
Considering the previous text, judge the following item.
According to the text, handsets are essential for people
because sometimes healthcare, education and social services
are offered only through smartphones.
Concerning the previous text and its linguistic aspects, judge the following item.
According to the text, in Spain there are villages that were
very important cities during the time of the American Wild
West.
Concerning the previous text and its linguistic aspects, judge the following item.
It can be inferred from the text that many different
productions were made in Almería because its landscapes are
very convenient and diversified.
Concerning the previous text and its linguistic aspects, judge the following item.
In the fragment ‘The good guy only has to keep things in
order’, the word ‘has’ could be correctly replaced with must,
without changing the meaning of the text.
Concerning the previous text and its linguistic aspects, judge the following item.
In the fifth paragraph, the word “stuntman” means a man
who performs a dangerous action which needs to be done by
someone skilled, especially instead of an actor in a film or
television programme.