操作调光器开关，确保光的强度改变。 A: Operate the dimmer switch and make sure that the intensity of the light changes. B: Operate the dimmer switch and check the brightness of the light changes. C: Operate the dimmer switch and check the brilliance of the light changes.

请选择(3)处最佳答案（）。 A: thinner B: stabler C: lighter D: dimmer

以下选项哪个不属于灯具属性。（ ） A: “time” B: “gobo” C: “color” D: “dimmer”