猜你喜欢
- 1求证:如果三角形中两条内角平分线相等,则这个三角形是等腰三角形
- 2It is so a beautiful place.错了改正
- 3设A,B为N阶矩阵,满足2(B^-1)A=A-4E,E为N阶单位矩阵,证明:B-2E为可逆矩阵,并求它的逆矩阵
- 4如图,拦水坝的横断面是梯形ABCD,坡角α=28°,斜坡AB=9米,求拦水坝的高BE.(精确到0.1米,供选用的数据:sin28°=0.4695,cos28°=0.8829,tan28°=0.5317,cot28°=1.8807)
- 5put a ,an or some before the word
- 6ATP释放能量是通过氧化分解吗?
- 7英语翻译
- 8Give brief answers to the questions:1.In what sense does reading make a full man?2.What do you know Daniel Defoe?
- 9弹簧测力计的两端各用100N的力拉,为什么示数会是100N?
- 10people run after higher living standard.