| There are several different methods
that can be used to create a forecast. The method a forecaster chooses depends
upon the experience of the forecaster, the amount of information available to
the forecaster, the level of difficulty that the forecast situation presents,
and the degree of accuracy or confidence needed in the forecast. The first of these methods is the persistence method; the simplest way of producing a forecast. The persistence method assumes that the conditions at the time of the forecast will not change. For example, if it is sunny and 87 degree today, the persistence method predicts that it will be sunny and 87 degree tomorrow. If two inches of rain fell today, the persistence method would predict two inches of rain for tomorrow. However, if weather conditions change significantly from day to day, the persistence method usually bre A. (A) The method will work well if weather conditions change greatly from day to day. B. (B) It is the simplest and the best way of producing a forecast. C. (C) It is impossible to use the method because weather condition changes constantly. D. (D) The root of the frequent failure of the method is the assumption on which it is based. [单项选择]There are several different methods that can be used to create a forecast. The method a forecaster chooses depends upon the experience of the forecaster, the amount of information available to the forecaster, the level of difficulty that the forecast situation presents, and the degree of accuracy or confidence needed in the forecast.
The first of these methods is the persistence method; the simplest way of producing a forecast. The persistence method assumes that the conditions at the time of the forecast will not Change. For example, if it is sunny and 87 degrees today, the persistence method predicts that it will be sunny and 87 degrees tomorrow. If two inches of rain fell today, the persistence method would predict two inches of rain for tomorrow. However, if weather conditions change significantly from day to day, the persistence method usually breaks down and is not the best forecasting method to use. The trends method involves determining the speed and direction of move A. Imagination of the forecaster. B. Necessary amount of information. C. Practical knowledge of the forecaster. D. Degree of difficulty involved in forecasting. [单项选择]
Different quality factors of software can be reflected upon user's different points of view，through product running，product modification and product transformation.Of the following properties，which one is connected with product running （） A. Ⅰ B. Ⅱ C. Ⅰ, Ⅱ D. 以上都是 [单项选择]The different phones that can represent a phoneme in different phonetic environments are called the ______ of that phoneme.
A. allophones B. phones C. allomorph D. phonetics 我来回答: 提交
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