什么是线状符亏法？并举例说明。_爱下问搜题

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问题问答题简答题

什么是线状符亏法？并举例说明。

答案

参考答案：

线状符号法用于表示呈线状分布的现象，如河流、海岸线、交通线、地质构造线、山脊线等。线状符号用颜色或不同的结构表示线状要素的质量（类别）特征，其粗细只表示其重要程度，如主要、次要等，并不含有明确的数量概念。

完形填空

We all laugh. We all hurt. We all make mistakes. We all dream, that’s life. It’s a journey. Please follow these rules to make the journey of your life a journey of joy!　
       positive through the cold season could be your best         against getting ill, new study findings suggest.
In an experiment that         healthy volunteers to a cold or flu virus, researchers found that people with a         sunny characteristic were less likely to         ill. The findings, published in the journal Psychosomatic Medicine, build on evidence that a “positive emotional style” can help         the common cold and other illnesses.
Researchers believe the reasons may be both objective as in happiness increasing immune(免疫的) function and subjective as in happy people being less         by a scratchy throat or runny nose. “People with a positive emotional style may have different immune         to the virus,” explained the lead study author Dr Sheldon Cohen of Carnegie Mellon University in Pittsburgh. “And when they do get a cold, they may         their illness as being less severe.”
Cohen and his colleagues had found in a         study that happier people seemed less likely to catch a cold, but some questions remained as to whether the emotional tendency itself had the effect.
For the new study, the researchers had 193 healthy adults with complete standard measures of personality tendency, health-consciousness and emotional “style”. Those who         be happy, energetic and easy-going were judged as having a positive emotional style,         those who were often unhappy, tense and unfriendly had a negative style. The researchers gave them drops through their noses         either a cold virus or a particular flu virus. Over the next six days, the         reported on any aches, pains, sneezing they had, while the researchers collected         data, like daily mucus(黏液) production. Cohen and his colleagues found that based on objective measures of nasal woes(鼻部的不适), happy people were less likely to develop a cold.

B．opportunity

C．what’s more

D．researchers

判断题

螺杆挤压机传动皮带的更换必须是冷态更换。