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平行四边形一条边是10,则两条对角线可以是（ ）A.4和8 B.6和8 C.8和10 D.10和12 y'（x）+ay（x)=z(x), wo jia de da zhi lan mei you le zen me ban 一个长方体长10厘米,宽6厘米,高4厘米.这个长方体三个不同表面的面积比是多少? 把一个长10厘米,宽6厘米,高4厘米的长方体,切成两个小长方体,两个小长方体表面积得和,最大是多少平方 16除（-2）3的平方-（-8/1）*（-4） Lm truly happy to hear the news.为什么用 truly? Lm truly happy to hear the news. 七年级下浙教版科学同步练第2节答案 who is the most talented person you know?whatwho is the most talented person you know?what can he/she do? Tell your partner about this person. 1.The most famous are the Canadian Roswell,_______(know)in China as Dashan.2.They sat there,________(read)their textbooks.3.---Is Tom in?---_____,please.I'll see if I can find him for you.A.Hold up B.Hold on C.Hold off D.Hold out i am ______ to hear the ______news.(frighten) 一个谷囤,上面是圆锥形,下面是圆柱形,量得底面周长是6.28米,圆柱的高是1.5米圆锥的高是0.6米.这个谷囤的体积是多少如果每立方米的稻谷重560千克,这个谷囤能装稻谷多少千克? 13001可以用13003么?管脚排列是什么 黑豆黑之麻黑米是碱性还是酸性 判断下面两圆的位置要求 2sc5198的管脚排列?e b c三极各对应哪个脚? 用c++判断两圆的位置关系DescriptionOne day,Lby’s girlfriend give him two circle,these two circle can be expressed as (x ,y,r ),where x,y is the center coordinate,and r is the radius.Now Lby wants to know the relation of these two circle,so (1)求两圆的圆心距d、(2)判断两圆位置关系若两圆的圆心距d满足|d—4|=3、且两圆的半径分别为R、r满足关于*的方程*的平方—2(R—4)*—(r—3)的平方=0有两个相等实根 判断下列各题中两圆的位置关系（1）C1:x^2+y^2+2x-6y-26=0,C2:x^2+y^2-4x+2y-4=0 求一篇初二语文学习计划的作文,总结出初一的经验教训,就新学期的打算, 是复习教案，得有目标等，不是复习资料哦 对可燃冰的开采,请你大胆想象,设计一种科学的开采方案. It seems that they are very exczted改成同义句 高三每天的复习计划该怎么写? 寒假复习计划怎么写? WHO IS IT是谁唱的快 what it is?who it is? who is it 它是谁 It is i who ____ next 初二语文要怎样复习才全面? 初二语文如何复习现代文