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相比战略计划,战术计划的风险程度较低。()
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泰勒的科学管理既重视技术因素，也总是人的社会因素。（）
An inductor, also called a coil, chokes, or reactor, is a_______________ (passive or active) two-terminal electrical component that stores energy in a _____________field when electric current flows through it.
An inductor has a _______________ _______________ to oppose current flow in an AC circuit.
A transformer has 1000 turns in primary side coil and 500 turns of secondary coil. Calculate the output voltage if the input voltage is 230V AC. Output voltage = _____________V AC (no decimal place)
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