从水准仪点BMA出发,经过3站测量后测得B点的高程。如果每一站的测量误差为m=±2. 发布时间:2017-08-11 05:27 │ 来源:www.tikuol.com 题型:单项选择题 问题: 从水准仪点BMA出发,经过3站测量后测得B点的高程。如果每一站的测量误差为m=±2.0mm,则P点高程的中误差为()。A.±2.0mmB.±6.0mmC.±3.5mmD.±12.0mm
题型:单项选择题 设ABCD是边长为1的正方形,点M在AB上,且AM:MB=1:2,N在AD上,AN:ND=2:1,作正方形ABCD的外接正方形A′B′C′D′,使四边分别过A、B、C、D,且A′D′∥MN,则正方形的面积A′B′C′D′为______. 查看答案
题型:单项选择题 An instruction is made up of operations that (68) the function to be performed and operands that represent the data to be operated on. For example, if an instruction is to perform the operation of (69) two numbers, it must know (70) the two numbers are. The processor’s job is to (71) instructions and operands from memory and to perform each operation. Having done that, it signals memory to send it (72) instruction.A.getB.makeC.pushD.pull 查看答案