地面上有A、B、C三点,已知AB边的坐标方位角AB=35°23′,测得左夹角∠ABC=89°34′,则CB边的坐标方位角CB=(A)。A124°57′B304°57′C-54°11′D305°49′31、测量仪器望远镜视准轴的定义是()的连线。
时间:2020-06-16
人气:0
Parents, teachers in schools and communicators in or using the mass media are all capable of ________ our potential interests.
时间:2020-06-16
人气:0