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in the phrase it describes his lived ethos, the word ethos is an uncountable noun. With this in mind, mark True (T) or False (F):
( ) The word ethos is uncountable because it refers to the guiding spirit, values, or character of a person, group, or culture.
( ) The word ethos names a general, continuous quality (a way of thinking/behaving).
( ) In the text, you could say two ethoses because it reÍers to an overarching spirit or attitude that applies to many people.
( ) The use of ethos is functional when the writer wants to talk about individual instances.
Which alternative CORRECTLY fills in the parentheses above?
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Analyze the following statements regarding the word ringmaster used in the final paragraph and mark T (True) or F (False):
( ) In literal terms, a ringmaster is the person in charge of a circus performance, especially the one who introduces the acts, guides the audience's attention, and keeps the show moving in the ring.
( ) In the text, the word is used metaphorically.
( ) The "ringmaster" stands for P.T. Barnum as the director/controller of attention and spectacle, the one who teaches people that any kind of publicity (even fake or sensational) is acceptable as long as it grabs notice.
( ) "Ringmaster", in popular culture, means the master-of-ceremonies of a showy, attention-driven culture, not just a literal circus host.
Which alternative CORRECTLY fills in the parentheses a bove?
In the sentence Well... if you follow the ringmaster's advice, don't be surprised when you end up Iiving in a circus, the writer organizes the if clause and the main clause in such a way that:
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According to the passage, what is the main criticism the author has about the idea that any publicity is good publicity?
Em um manual de operação de um sistema de espectrometria de massas (EM) com fonte de ionização por electrospray (ESI), está indicado o seguinte procedimento:

"To ensure optimal ionization of biomolecules, use a capillary voltage between 3.5 and 4.5kV. The nebulizer gas should be set at 50 psi, and the drying gas should be heated to 350°C. Maintain a source temperature of 120°C. For larger molecules, increasing the capillary voltage to 5kV may improve ionization efficiency."

Com base nas informações fornecidas, a recomendação sobre o ajuste da tensão do capilar é: