已知A点坐标XA=140m,YA=70m;B点坐标XB=90m,YB=120m。试计算A、B两点之间的水平距离DAB及其坐标方位角αAB。 ( ) A) DAB=71.71m,αAB=137° B) DAB=80.81m,αAB=130° C) DAB=70.71m,αAB=135° D) DAB=70.11m,αAB=125°
参考答案:
7.Well, let’s put our heads together and find ____
7.Well, let’s put our heads together and find _______ to the problem.(A)an an