2025知到答案 热工学（英文）（北京科技大学） 最新智慧树满分章节测试答案

1、多选题：
Which of the following are recognized forms of energy? Select all that apply.
选项：
A:Mechanical Energy
B:Radiant Energy
C:Chemical Energy
D:Nuclear Energy
E:Thermal Energy
F:Electric Energy
G:Acoustic Energy
答案: 【Mechanical Energy;
Radiant Energy;
Chemical Energy;
Nuclear Energy;
Thermal Energy;
Electric Energy】

2、单选题：
Which of the following statements best describes the first law of thermodynamics?
选项：
A:Energy transfers always increase the total energy in a system.
B:The total energy of an isolated system remains constant over time.
C:Energy can be created or destroyed, but not converted from one form to another.
D:Entropy of a closed system always decreases over time.
答案: 【The total energy of an isolated system remains constant over time.】

3、判断题：
All energy sources can be classified into two main categories: renewable and non-renewable sources.
选项：
A:对
B:错
答案: 【对】

4、多选题：
Thermal energy is the most widely used form of energy across the globe. Which of the following statements best reflect its significance in energy problems and societal development? Select all that apply.
选项：
A:The efficient utilization of thermal energy can drive economic growth and improve living standards.
B:Utilizing thermal energy can help reduce dependence on fossil fuels and decrease greenhouse gas emissions.
C:Thermal energy plays a critical role in industrial processes and heating applications.
D:Thermal energy is solely derived from renewable sources, making it a sustainable option for energy needs.
E:Thermal energy contributes significantly to electricity generation, particularly in thermal power plants.
答案: 【The efficient utilization of thermal energy can drive economic growth and improve living standards.;
Utilizing thermal energy can help reduce dependence on fossil fuels and decrease greenhouse gas emissions.;
Thermal energy plays a critical role in industrial processes and heating applications.;
Thermal energy contributes significantly to electricity generation, particularly in thermal power plants.】

5、单选题：
Which of the following is NOT considered a primary energy source?
选项：
A:Wind
B:Solar
C:Natural Gas
D:Electricity
答案: 【Electricity】

6、单选题：
Which of the following best describes the process of converting wind energy into mechanical energy in wind turbines?
选项：
A:Wind energy is stored in batteries for later use in mechanical applications.
B:Wind energy drives the rotation of blades, which in turn drives a generator to produce electricity.
C:Wind energy is converted directly into electrical energy without any intermediate steps.
D:Wind energy creates chemical reactions that generate heat and subsequently produce mechanical energy.
答案: 【Wind energy drives the rotation of blades, which in turn drives a generator to produce electricity.】

7、单选题：
Which of the following statements best describes the primary difference between a Carnot engine and a typical heat engine used in power plants?
选项：
A:A Carnot engine is an idealized system that serves as a standard for comparing real engines, while typical heat engines have irreversibilities and lower efficiencies.
B:A typical heat engine can achieve higher efficiency than a Carnot engine by using multiple working fluids.
C:A Carnot engine operates between two temperature reservoirs and is 100% efficient.
D:A typical heat engine only converts thermal energy into mechanical work, whereas a Carnot engine also converts some energy into electrical energy.
答案: 【A Carnot engine is an idealized system that serves as a standard for comparing real engines, while typical heat engines have irreversibilities and lower efficiencies.】

8、单选题：
What is the primary role of thermal energy in energy utilization worldwide?
选项：
A:It is primarily used for transportation fuels.
B:It is used exclusively for residential heating.
C:It contributes significantly to heating and industrial processes.
D:It is mainly used for electricity generation.
答案: 【It contributes significantly to heating and industrial processes.】