举一反三
- In a constant pressure process for a closed system, the enthalpy change of the system depends on the heat exchanged.
- The expansion tank for a diesel engine closed cooling system is designed to maintain a constant head on the system and （）.
- 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.
- 43. The VDR system is designed to operate ____once it is set up correctly. There is no user interaction.
- An Embedded System is a ______ designed for specific control functions within a larger system． A: computer B: program C: computer system D: tool
内容
- 0
In the （） pressure charging system the pulse of energy that occur as the exhaust is released from the cylinder to improve the output of the turbocharger.
- 1
Which of the following descriptions is correct? A: The microscopic viewpoint studies the large-scale properties of matter (temperature, pressure, volume, etc.). B: The part of the universe under study in thermodynamics is called the system; the parts of the universe that can interact with the system are called surroundings. C: For an open system, only matter can be transferred between system and surroundings. D: A closed system must be an isolated system, but an isolated system may not be a closed system.
- 2
Smoke Exhaust and Ventilation System
- 3
A computer system consists of hardware system and software system.
- 4
Closed-loop control system is an automatic control system. Open-loop control system is not an automatic control system.