一般而言,确定地面点位需要测量三个参数:()。
A.水平角度
B.竖直角度
C.水平距离
D.高程(高差)
E.仪器高度
参考答案:A, C, D
A large number of students in our school ______ from the countryside, the number ____ growing these years. [ ]
A. is, has been
B. are; has been
C. is, have been
D. are, have been
媒体借助于闭路电视、计算机、静电复印机、传真机等一系列电子设备,将这些设备与言语和纸张结合起来所产生的沟通方式是()
A.非语言沟通
B.口头沟通
C.电子媒介沟通
D.书面沟通