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- 1have difficulty还是difficultyies (in)doing sth?
- 2I like playing football,reading and play computer games.
- 3在平直的公路上行驶的汽车,受到水平方向的牵引F1和阻力F2的作用,在F1=F2,F1小于F2和F1大于F2三种情况下,汽车将··························································
- 4已知半径为1196,弦长为20,弧长是多少?圆心角是多少?计算公式什么?
- 5让的近义词 一个字
- 6设二维随机变量(X,Y)的联合概率密度为f(x,y)=e的-y次方 0
- 7one and a half+复数名词作主语,谓语动词用什么形式
- 8修一段路甲队独修12天后,由乙队接着单独修6天完成.如果甲乙两队和修十天完成.甲和乙各自独修各需几天?
- 9英语单词解释中,(pl.
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