土地面积量算与平差的原则是什么?
参考答案:
遵循“整体到局部,先控制后碎部”的原则,即以图幅理论面积为基本控制,按图幅分级测算,依面积大小比例平差的原则。
判断正(√)误(×),把错的改正过来。
( ) 1. I had fun yesterday. ________________
( ) 2. I was happy now. ________________
( ) 3. He eats a sandwich everyday. ________________
( ) 4. Do you go shopping yesterday? ________________
( ) 5. Jenny miss her mother in Beijing. ________________
曲线y=x4上某点切线的斜率等于4,则此点坐标为( )
A.(1,1)和(-1,1)
B.(1,1)
C.(-1,1)和(-1,-1)
D.(-1,-1)