【Daily Question】2018.8.12
Thread Content
Multiple-choice question: If the light does not turn on when the electro-optical level is activated, possible reasons include ( ). A: Not powered on. B: Poor contact between the lamp holder contacts and the bulb’s base. C: Excessively small gap between the switch electrode contacts. D: Oxidation of the electrode contacts. ABD
A: Not powered on. B: Poor contact between the lamp holder contacts and the bulb’s base. C: Too small a gap between the switch electrode contacts. D: Oxidation of the electrode contacts