若元件ab的电压uab=2V,电流ida=-1A,则此元件电压和电流的参考方向是()。A、关联参考方向B、非关联参考方向C、不确定
若元件ab的电压uab=2V,电流ida=-1A,则此元件电压和电流的参考方向是()。
- A、关联参考方向
- B、非关联参考方向
- C、不确定
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