Although the initial setup of generators and a power grid by Edison and JP Morgan was rather costly, the electrification of lighting in lower Manhattan doubled work efficiency when the energy costs were cut in half.
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Athe electrification of lighting in lower Manhattan doubled work efficiency when the energy costs were cut in half
分析该选项
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Bthe electrification of lighting in lower Manhattan doubled work efficiency while cutting energy costs in half
分析该选项
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Cthe electrification of lighting in lower Manhattan doubled work efficiency while as costs were cut to half
分析该选项
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Dlighting electrification in lower Manhattan doubled work efficiency while energy costs were cut in half
分析该选项
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Elighting electrification in lower Manhattan doubled work efficiency while costs were cut to half
分析该选项
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正确答案: B