当望远镜视准轴水平且竖盘水准气泡居中时,竖盘的指标读数与规定常数的差值称为竖盘的指标差。()
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造成施工放线质量事故的因素之一为测量的起算坐标,高程有问题。()
Now it is remain true that the recessions usually focus their hurt on ______.
According to the report, older adults of 65 and over do not have to increase their ______.