Foram encontradas 120 questões.
No rotor ilustrado na figura acima, foram detectados desbalanceamentos de massas m1 e m2 nas posições 1 e 2. Considerando os requisitos para balanceamento estático e dinâmico desse rotor, julgue o item seguinte.
Se !$ L_1 = L_2 !$ e !$ r_1 = r_2 !$ e se for acrescentada na posição 5 uma massa !$ m =m_1 + m_2 !$, então o rotor ficará estaticamente balanceado.
Provas
Tendo o texto acima como referência inicial, julgue os itens que se seguem, relativos ao Brasil e à ONU.
A autoridade política da ONU levou o Brasil a defender a idéia de que essa instituição pudesse ter braços armados próprios.
Provas
the picture and text as reference, judge the following items.
"requiring" (L.44) can be correctly replaced by which require without any change in meaning.
Provas
the picture and text as reference, judge the following items.
"useless" (L.28) means having no purpose
Provas
the picture and text as reference, judge the following items.
"three-prong plugs" (L.4) are plugs with three prongs.
Provas
the picture and text as reference, judge the following items.
Sofas, chairs and tables are examples of appliances.
Provas
the picture and text as reference, judge the following items.
The complement of the phrase "you will have to" (L.2) is pay attention to the plug when buying appliances.
Provas
the picture and text as reference, judge the following items.
The photo shows a plug with a round pin and two flat blades.
Provas
According to the text,
the existence of so many different types of electrical outlets poses a problem.
Provas
According to the text,
all appliances will require the third prong.
Provas
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