In a feedback system, outputs from the system affect future activities of the system
举一反三
- keeping the homeostasis<br/>of the internal environment depends on the () A: Non-automatic<br/>control system B: Negative<br/>feedback control system C: positive<br/>feedback control system D: Feed-forward<br/>control system E: nervous<br/>and endocrine regulation.
- If the steady-state error of unity feedback control system to a ramp input is constant, then the system is a type system A: 0 B: I C: II D: III
- The surroundings include everything external to the system，and the system is separated from the surroundings by the system boundaries.
- A common law system is different from a civil law system because:
- Electronic ignition system differs from conventional ignition system in the secondary circuit.