举一反三
- In a constant volume process for a closed system, the internal energy change of the system depends on the heat exchanged.
- In a constant pressure process for a closed system, the internal energy change of the system is equal to the sum of the heat exchanged and the work.
- The expansion tank for a diesel engine closed cooling system is designed to maintain a constant head on the system and （）.
- The highest pressure in any closed diesel engine freshwater cooling system is at the （）.
- The pressure-reducing circuit can change the pressure of the main system。
内容
- 0
Turbocharging system may be designed to operate on either the （） or the constant pressure exhaust system.
- 1
Which of the following phenomena belongs to an adiabatic process ?() A: The temperature of the system remains unchanged B: The system does not absorb heat from the environment C: No heat exchange between the system and the environment D: The internal energy of the system remains unchanged
- 2
For a system of an ideal gas, in which process of the following that the heat absorbed by the system and the work done toward the surroundings are positive? A: Isochoric (等体) and pressure decreasing process. B: Isothermal (等温) and expanding process. C: Adiabatic and expanding process. D: Isobaric (等压) and compressed process
- 3
The pressure-reducing circuit can change the pressure of the main system。 A: 正确 B: 错误
- 4
The<br/>pressure-reducing circuit can change the pressure of the main<br/>system。(<br/>)