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The power factor is a measure of the phase difference between voltage and current and is expressed as the（） of the phase angle.
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The power factor is a measure of the phase difference between voltage and current and is expressed as the（） of the phase angle.
A、sine
B、cosine
C、tangent
D、cotangent
时间：2022-01-21 15:57
关键词：
船舶电气与船舶安全
答案解析
B
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