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- 1如图,正点电荷Q的电场中,A点场强为100N/C,C点场强为36N/C,B是AC的中点,则B点的场强为_N/C.
- 2将1,2,3,······,100这100个自然数任意分成50组,每组两个数,将其中一个数记为a,另一个数记为b,
- 3一个圆柱的底面周长是18.84cm,高10cm,它的体积是(),与这个圆柱等底等高的圆锥体的体积是()
- 4物理问题:说有一个杆秤,秤砣的一角断了,用该杆秤称1千克的花生,问实际质量比1千克大还是小
- 5What colour is your hair?
- 6She likes listening to music改为否定句
- 7用关联词语把两个句子并成一句话.
- 8六年级英语阅读短文完成句子
- 9《石灰吟》中表达作者志向气节的诗句课解释为
- 10翻译She has waited for the letter for six months 和She has been waitting for the letter for six months.