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- 1灯泡L1,L2的电阻分别是4欧姆 6欧姆,电压为3v,求两个灯泡的总电阻?电流表的示数?各个灯泡丄的电压?
- 2in england,you must drive on the right of the road改错
- 3一个关于how often和how many times的问题
- 4Whan do you think of your school rules?Please write down your opinions(abou
- 5我今天早上迟到是因为我睡过头了.I____ ____ for school this morning because I ____ _____.
- 6硝酸浓度配制
- 7100^2-99^2+98^2-97^2+...+2^2-1^2
- 8已知关于XY的多项式mx^3+2xy -x-3x^3+2nxy-3y 合并后不含二次项 ,求n^m的值
- 9She drinks eat in the living room.(改成一般疑问句)
- 10为什么 在电源内电阻不能忽略的情况下如果一个电阻的阻值变大,那么与之串联的用电器电压,电功率都变小?