题目内容
Henry has many friends working in the government. His sources of information are usually .
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With water demand growing, the conflict between the two neighboring villages over water has over the years.
Years ago the professor said that there was no doubt that the people in this city would be with a water shortage, if not a water crisis.
The new system is said to enable us to use much less oil than before, in other words, to increase energy considerably.
已知经纬仪竖盘的刻划注记形式为顺时针，盘左望远镜水平时竖盘读数为90°。经盘左、盘右测得某目标的竖盘读数分别为：L=76°34′00″，R=283°24′00″，则一测回竖直角为（）。
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