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- 1This little boy came from a n_ area,he had no enough food to eat(填空)
- 2设3阶方阵A=(α 2γ2 3γ3),B=(β,γ2,γ3),且已知|A|=18,|B|=12,求行列式|A-B|.
- 3一道填空题
- 4一个长方体,长宽高都扩大相同的倍数,体积比原来多7倍,棱长总和比原来多100厘米,求扩大后棱长的总和.
- 5All ___ I ever wanted to do was to travel
- 6棱长六米的正方体水池占地面积是36平方米.是对还是错
- 7As is known to us,China is a country belonging to the Third World.句中belong是ing,前面为什么没Be动
- 8函数f(x)=(1/2)^x-sin x在区间[0,2π]上的零点个数为多少个?
- 9高倍天文望远镜价格多少才能满足观星的基本要求?
- 10to show和showing有什么区别吗?