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单选题 The generator voltages are usually stepped up to the transmission voltage level by ( )
学科：专业英语（智能化）
时间：2024-10-21 09:24:51
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题目1单选题
Residential and commercial customers are supplied by the secondary distribution feeders at ( ) in ChinaA. 48/100VB. 220/380VC. 110/220VD. 120/240V
题目2单选题
The generator voltages are usually stepped up to the transmission voltage level by ( )A. step-down transformersB. parallel reactorsC. step-up transformersD. series capacitors
题目3单选题
In power plant,() convert the primary energy to mechanical energy, and ()convert mechanical energy to electric energyA. prime movers, asynchronous generatorsB. prime movers, synchronous generatorsC. prime movers, prime moversD. synchronous generators, prime movers
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