单选题
操作调光开关,确保光的强度发生变化。
A
A.Turn the dimming knob and find out the intensity of the light changes.
B
B.Press the light exchange switch to observe the change of light intensity.
C
C.Operate the dimmer switch and make sure that the intensity of the light changes.
答案解析
正确答案:C
相关知识点:
操作调光变,dimmer是调光器
