【简答题】计算:1÷50+2÷50+…+98÷50+99÷50=______.
【简答题】5===50÷( )=( )÷500.5= = =50÷( )=( )÷50
【判断题】通常所说的单层厂房结构的变形缝包括伸缩缝、沉降缝和防震缝三种。()
【简答题】小明向西走50米记作+50,向北走50米记作-50米.______.
【多选题】下列固定资产折旧方法中,属于加速折旧方法的有
【单选题】网页背景颜色与前景文字颜色一般需要( )
【简答题】If you look for a book as a present for a child. You will be spoiled for choice even in a year when there is no new Harry Potter. J.K Rowling’s wizard is not alone: the past decade has been a harvest ...
【简答题】看图填空. 20=2020+______○20+______ x○50x+______○50+______ 50+a○50+a50+a-______○50+a-______ x+20○70x+20-______○70-______ 通过填空,你有什么发现?______.
【简答题】把50+50+50+50改写成乘法算式是( )。
【简答题】If you look for a book as a present for a child. You will be spoiled for choice even in a year when there is no new Harry Patten J.K Rowling’s wizard is not alone: the past decade has been a harvest f...