logo - 刷刷题
下载APP
【单选题】

在三角测量中,根据外业观测元素(角度和边长)的不同可分为测角网、测边网、()三种网形。

A.
导线网;
B.
边角网;
C.
线形三角锁网;
D.
线形三角网。
举报
参考答案:
参考解析:
.
刷刷题刷刷变学霸
举一反三

【单选题】超铀元素大部分是

A.
β+辐射体
B.
α辐射体
C.
γ辐射体
D.
β-辐射体
E.
βγ辐射体

【单选题】It is now almost two years since the European Union decided to go ahead with plans to launch a satellite-navigation network to rival America’s existing Global Positioning System (GPS). For much of thi...

A.
Using of various signals for communication.
B.
Writing message or information in secret code.
C.
Automatic ally operated positioning system.
D.
Accuracy checking device.