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- 1雷锋事迹100~200字左右就行,尽快,急用
- 2一个盛有水的圆柱体容器地面半径为五厘米,高30厘米,水深20厘米,现将一个底面半径3厘米,长20厘米的圆柱
- 3电阻R1,R2并联后接到电源上,R1=60欧,R2=30欧,干路中的电流为0.5A.求(1)电源电压(2)R1的电功率
- 4在“观察洋葱表皮细胞”实验中,将低倍镜换成高倍镜观察时,发现视野太暗,为增加视野亮度,下列操作合理的是( ) A.移动装片 B.调节粗准焦螺旋 C.增大光圈 D.调节细准焦螺旋
- 5---I don't the movie is well-made.---I don't agree with you It's the __one I've ever seen A better
- 6已知三角形abc中,ab=3,bc=4,ca=5,空间内有多少个平面,到a,b,c三点的距离都为1(要简单解答)
- 7I am tald that you are leaving for Beijing.--Who says it?这个句子为什么用says 一般现在时?而不用过
- 8—Where are you going?----We'll go to Gulin____Guangdong for our holidays.
- 9怎么用磁铁来分辨南北极?
- 10班级的班标,还有班级的口号,还有原因