问题
填空题
量值传递的逆过程是（）.
答案
参考答案：量值溯源
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量值传递的逆过程是（）.
参考答案：量值溯源
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| In some areas of the world the weather is very 1_____ and this fact plays an important part in the daily lives of the people. 2_____ they are farmers, fishermen, or sailors, for instance, they 3_____ know about these changes ahead of time. Space scientists and airplane pilots 4_____ need weather 5_____. 6_____ earliest time, men have 7_____ the sky, the wind, and the atmosphere, as well as a variety of other weather signs, in order to make weather 8_____. But often their weather predictions have not been accurate (准确的). Now there are government bureaus (局处) in many places that 9_____ weather conditions very carefully. They use a lot of scientific 10_____ to help them make their forecasts (预报). For instance, they have instruments to 11_____ speed and direction of the wind. Thus they can predict the 12_____ of a storm. They have special balloons, ships, and airplanes to help them 13_____ their accuracy, and they make use of radar, satellites and computers to gather 14____ information. Today when a 15_____ takes off from an airport, he 16_____ know what kind of weather to expect when he reaches his destination (目的地). If there is 17_____ rain or snow in the mountains, a weather bureau can predict the day and 18_____ the hour that a river may overflow (使涨满) its banks many miles away. When a storm is moving in a certain 19_____, the people in that area can learn of it ahead of time and 20_____ it. | ||||
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