The input resistance of the whole multistage amplification circuit is the input resistance of ( )
举一反三
- The resistance value is infinite, the current passing through the resistance is always zero, and the voltage depends on the external circuit, then it is called as the short circuit state.
- With no resistance(电阻) in the circuit(电路) the current(电流) would increase forever.
- Which of the following does not belong to concrete durability.（） A: resistance to freezing and thawing B: thermal shock resistance C: chloride resistance D: chemical resistance
- Digital multi-meter cannot measure ( ) when the measured circuit is working. A: voltage B: current C: resistance D: None of the above
- The<br/>activity of the autonomic nervous system can mainly affect ( ) A: Viscous<br/>resistance B: Inertial<br/>resistance C: Airway<br/>resistance D: Pulmonary<br/>elastic resistance E: Thoracic<br/>elastic resistance