问题
判断题
视在功率等于有功和无功的平房和。
答案
参考答案：错
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视在功率等于有功和无功的平房和。
参考答案：错
| 情景交际：选择方框中的句子完成对话，其中有两项多余。 | |
| A: You look pale, Dr. Li. 1 B: I only feel a little tired. A: It looks more serious than being tired. 2 B: No, thanks. Nothing serious, I think. A: 3 But you have worked for thirty-six hours without having a rest. B: I'm a doctor. 4 A: 5
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