猜你喜欢
- 1He fells _____ because he can't understand what others are saying when talking to them
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- 4在直线x+3y=0上求一点p,使它到原点的距离与到直线x+3y-2=0的距离相等
- 5设向量组α1,α2,α3线性相关,α2,α3,α4线性无关,证明向量α1必可表示为α2,α3,α4的线性组合
- 6铅笔芯的软硬程度与铅笔芯的电阻大小有何关系?
- 7一杯盐水200克,其中盐与水的比是1:24,再放入4克盐,这是盐水的含盐率是多少?
- 8is the day after tuesday前面填什么?
- 9does tom run with his father?的否定回答
- 10已知实数a,b,c满足a+b-c=3,a2+bc-3a+1=0,则a2+b2+c2的值为