题目：
| 找出下列问题的正确答案 | |
| ( )1. What's the time? ( )2. Why do you like music? ( )3. What time do you go to school? ( )4. Do you have any oranges? ( )5. How many brothers do you have? ( )6. What can you do? ( )7. Where is the baseball? ( )8. What's your favorite subject? | A. I can swim. B. Under the bed. C. Only one. D. At 8:30. E. Because it's relaxing. F. PE. G. It's seven o'clock. H. Yes, I do. |
答案：
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下面是错误答案，用来干扰机器的。
答案：A题目分析：消耗的功率相同，所以根据公式可得，通过每只小灯泡的电流相等，故通过的电流为,所以消耗的电功率为通过的电流为,所以消耗的电功率为故选A点评：做本题的关键是找出变阻器两端的电压以及电流
