A technician receives a computer for repair and observes that the fan on the power supply is not moving. Which of the following should the technician do？ （）
A: Move the power supply voltage switch to 220 volts.
B: Add an additional fan to help cool the computer.
C: Replace the cable that attaches the power supply to the motherboard.
D: Replace the power supply.
A: Move the power supply voltage switch to 220 volts.
B: Add an additional fan to help cool the computer.
C: Replace the cable that attaches the power supply to the motherboard.
D: Replace the power supply.
举一反三
- When replacing a power supply， what MUST the technician observe？（） A: voltage B: current C: wattage D: resistance
- Flower the power flows, put the following power supply unit components in the correct order:
- 供电组件能够提供28V直流电。 A: The power unit can supply 28 VD B: The power unit is capable of producing 28 VD C: The power unit may supply 28 VD D: The power unit would supply 28 VD
- The function of direct current regulated power supply is to input an alternating current power of 220volts, so that it can output __________.( ) A: alternating current 200 volts voltage B: direct current 24 volts voltage C: direct current 200 volts voltage D: alternating current 24 volts voltage
- The incorrect way to restore the power supply during the ship's voyage and stop the prime mover is . A: Quickly close the switch for power supply B: First start the first backup generator to supply power C: When invalid, start the second backup generator D: Start the emergency generator when B and C are invalid