问题
单项选择题
DJ6级光学经纬仪的主要组成部分是( )。
A．基座、照准部、水平度盘
B．望远镜、水准管、度盘
C．三脚架、基座、照准部
D．仪器箱、照准部、三脚架
答案
参考答案：A
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DJ6级光学经纬仪的主要组成部分是( )。
A．基座、照准部、水平度盘
B．望远镜、水准管、度盘
C．三脚架、基座、照准部
D．仪器箱、照准部、三脚架
参考答案：A
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