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Q2341033
Inglês Pronomes | Pronouns ,
Ano: 2023 Banca: CESPE / CEBRASPE Órgão: TC-DF Prova: CESPE / CEBRASPE - 2023 - TC-DF - Auditor de Controle Externo – Área Especializada – Especialidade Tecnologia da Informação – Orientação Sistemas de TI |
Q2341033 Inglês
Text 1A1-I


        Hydrogen is viewed as a promising alternative to fossil fuel, but the methods used to make it either generate too much carbon dioxide or are too expensive. Rice University researchers have found a way to harvest hydrogen from plastic waste using a low-emission method that could more than pay for itself.

           By comparison, “green” hydrogen ⎯ produced using renewable energy sources to split water into its two component elements ⎯ costs roughly US$ 5 for just over two pounds. Though cheaper, most of the nearly 100 million tons of hydrogen used globally in 2022 was derived from fossil fuels, its production generating roughly 12 tons of carbon dioxide per ton of hydrogen.

          The researchers exposed plastic waste samples to rapid flash Joule, bringing their temperature up to 3100 Kelvin. “We demonstrated that we are able to recover up to 68% of that atomic hydrogen as gas with a 94% purity,” Kevin Wyss said. “I hope that this work will allow for the production of clean hydrogen from waste plastics, possibly solving major environmental problems like plastic pollution and the greenhouse gas-intensive production of hydrogen by steam-methane reforming.”


Internet: <news.rice.edu> (adapted).

Based on text 1A1-I, judge the following item.



The pronoun “their” (first sentence of the third paragraph) refers back to “plastic waste samples”.


Alternativas
Q2341032
Inglês Interpretação de texto | Reading comprehension ,
Ano: 2023 Banca: CESPE / CEBRASPE Órgão: TC-DF Prova: CESPE / CEBRASPE - 2023 - TC-DF - Auditor de Controle Externo – Área Especializada – Especialidade Tecnologia da Informação – Orientação Sistemas de TI |
Q2341032 Inglês
Text 1A1-I


        Hydrogen is viewed as a promising alternative to fossil fuel, but the methods used to make it either generate too much carbon dioxide or are too expensive. Rice University researchers have found a way to harvest hydrogen from plastic waste using a low-emission method that could more than pay for itself.

           By comparison, “green” hydrogen ⎯ produced using renewable energy sources to split water into its two component elements ⎯ costs roughly US$ 5 for just over two pounds. Though cheaper, most of the nearly 100 million tons of hydrogen used globally in 2022 was derived from fossil fuels, its production generating roughly 12 tons of carbon dioxide per ton of hydrogen.

          The researchers exposed plastic waste samples to rapid flash Joule, bringing their temperature up to 3100 Kelvin. “We demonstrated that we are able to recover up to 68% of that atomic hydrogen as gas with a 94% purity,” Kevin Wyss said. “I hope that this work will allow for the production of clean hydrogen from waste plastics, possibly solving major environmental problems like plastic pollution and the greenhouse gas-intensive production of hydrogen by steam-methane reforming.”


Internet: <news.rice.edu> (adapted).

Based on text 1A1-I, judge the following item.



One of the drawbacks about the current forms of extraction of hydrogen as fuel is the elevated cost.

Alternativas
Q2340599
Banco de Dados Big Data ,
Ano: 2023 Banca: CESPE / CEBRASPE Órgão: TC-DF Prova: CESPE / CEBRASPE - 2023 - TC-DF - Auditor de Controle Externo – Área Auditoria |
Q2340599 Banco de Dados

No que se refere a noções de Big Data, julgue o item subsequente. 



Dados estruturados e semiestruturados são tipos de Big Data, enquanto os dados não estruturados não se enquadram nos requisitos para Big Data.


Alternativas
Q2340598
Banco de Dados Big Data ,
Ano: 2023 Banca: CESPE / CEBRASPE Órgão: TC-DF Prova: CESPE / CEBRASPE - 2023 - TC-DF - Auditor de Controle Externo – Área Auditoria |
Q2340598 Banco de Dados

No que se refere a noções de Big Data, julgue o item subsequente. 



Os bancos de dados de Big Data ingerem, preparam e armazenam rapidamente grandes quantidades de dados diversos em um formato que as ferramentas analíticas possam usar.

Alternativas
Q2340597
Banco de Dados Conceitos Básicos em Banco de Dados ,
Ano: 2023 Banca: CESPE / CEBRASPE Órgão: TC-DF Prova: CESPE / CEBRASPE - 2023 - TC-DF - Auditor de Controle Externo – Área Auditoria |
Q2340597 Banco de Dados

Considerando os princípios que regem bancos de dados relacionais, julgue o item a seguir.



Em bancos de dados relacionais, a atomicidade é uma propriedade que garante que uma transação seja tratada como uma unidade indivisível de trabalho.

Alternativas
Respostas
211: C
212: C
213: E
214: C
215: C
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