题目内容
一次、二次绕组的电压有效值之比为
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变压器欲升压，则使
1. These days, you're less likely t0 see Europeans than wealthy Indians at the Lake Palace in Udaipur and well-to-do Chinese at the Red Capital Ranch boutique hotel near Beijing, with its gorgeous views of the Great Wall.
现有一电源变压器，电源为220V，一次绕组匝数为100匝，有两个二次绕组，一个匝数为50匝；另一个匝数为150匝。则两副绕组的电压为
2. And their demand for upscale travel is reaching even the most remote corners of the earth, from Tibet to Siberia, where posh hotels are opening in areas once hospitable only to backpackers.
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