题目内容
经纬仪视准轴检验和校正的目的是（）
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在全圆测回法的观测中，同一盘位起始方向的两次读数之差叫（）
在一个测回超限的方向数大于测站方向总数的()，重测整个测回。
多个测回间按一定的方式变换水平度盘起始位置的读数是为了消除（）误差
Where did the writer spend that Thanksgiving?_________________________________________________Why do you think they were sailing there?_________________________________________________What made the writer as a cook extremely busy on that Thanksgiving Day?_________________________________________________What was the writer thinking about on the deck after the day's hard work?_________________________________________________
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