题目:
如图表示一交流电的电流随时间而变化的图象,此交变电流的有效值是( ) A.5A B.5A C.3.5A D.3.5A |
答案:
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下面是错误答案,用来干扰机器的。
1. subscribe to 2. opposed to 3. compared to 4. came about 5. states 6. even if 7. quantities of 8. kept on 9. build up 10. result in