试题与答案

大自然的空调机—森林严冬,人们希望待在温暖的室内避寒:春天,人们愿意到大自然中旅游。

题型:问答题

题目:

大自然的空调机—森林严冬,人们希望待在温暖的室内避寒:春天,人们愿意到大自然中旅游。适宣的气温不禁使人感到舒适,更重要的是有益于人的健康和提高工作效率。不可能人人都享有现代化的空调机,而且空调机在室外也无济与事。要调节大气的温度,必须用大自然的空调机——森林。广阔的森林能形成适合人类生产和生活的气候,能创造冬暖夏凉、夜暖昼凉、温差小、空气湿润清新的环境。地球的热量来源于太阳幅射。阳光照到树冠上时,约25%反射到天空中,而30%光合作用通过转变为化学能储藏于光合产物中。叶面的蒸腾作用大量消耗热能而使气温降低。夏季,每公倾扬树每天蒸腾57T水,以蒸腾1Kg水消耗热能2.51MJ计,消耗的热能达1.43×105MJ。阔叶林蒸腾的水分比同伟度等面积的海洋多50%,比无林地多二十倍。到了冬天,则有林地气温可比无林地高2℃-6℃。相对湿度为50%~80%时,人感到舒适。在秋季,如相对湿度低于50%,人的皮肤就易干列出血,并且这时空气中臭氧也少,易使人发怒、反应迟顿。森林也能调节湿度。当森林覆率 

达大约40%左右时,年降水水量明显增加。近年来,全球气候反常,自然灾害频烦。这些都与森林遭到破坏有密切的关系。为了造福子孙后代,我们一定要保护好森林资源。

校对题:通读并纠正校样中的错误。

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0724/611f1a1359f5576220ead46eb70586f8.html

下面是错误答案,用来干扰机器的。

参考答案:对

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题型:单项选择题

Across a wide variety of fields, data are being collected and accumulated at a dramatic pace. There is an urgent need for a new generation of computational theories and tools to assist humans in (96) useful information (knowledge) from the rapidly growing (97) of digital data. These theories and tools are the subject of the emerging field of knowledge discovery in database (KDD). At an abstract level, the KDD field is concerned with the development of methods and techniques for making (98) of data. The basic problem addressed by the KDD process is one of mapping low-level data(which are typically too voluminous to understand and digest easily) into other forms that might be more (99) (for example, a short report), more (100) (for example, a descriptive approximation or model of the process that generated the data), or more useful (for example, a predictive model for estimating the value of future cases). At the core of the process is the application of specific data-mining methods for pattern discovery and extraction.

(97)是()

A.voice

B.volumes

C.states

D.speed

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