题目:
电阻为的一个小灯泡正常工作时电压为6V,若把它接在8V的电源上并能正常发光,需要给它____________联一个______________的电阻。
答案:
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One Possible VersionNowadays, many schools use the way of closed management to manage students, leaving students less freedom to leave the school at will. Students have di...