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Category | Format | Size |
---|---|---|
Western Normal University Edition Third Grade Chinese Volume 1 | pptx | 6 MB |
Description
"Breathing Highway" PPT courseware
Read the text and understand the topic.
We all know that automobile exhaust is the main factor causing air pollution. The nitrogen oxides in the "Air Quality Daily" published every day by newspapers and TV refer to automobile exhaust.
The dangers of car exhaust
When you are in constant traffic, you may smell a pungent odor. This is the smell of car exhaust. According to measurements, automobile exhaust gas is discharged through the exhaust pipe, crankcase, fuel tank, carburetor, etc. At present, people have separated more than 80 harmful substances from automobile exhaust, among which carbon monoxide, nitrogen oxides, hydrocarbons, lead dust and benzene are the main ones. In large and medium-sized cities, vehicle exhaust pollution accounts for more than 60% of the total atmospheric pollution.
How does the road "breathe"?
First, vents are arranged along the road, and then blowers are used to blow the exhaust fumes from the cars into the soil. Then, part of the nitrogen oxides is adsorbed on the surface of the soil, and the other part of the nitrogen oxides is dissolved in the water, absorbed by microorganisms in the soil, and turned into waste. This process is a reaction process between substances.
The adsorption and dissolution of exhaust gas by the soil completes the "breathing" of the road.
By letting roads "breathe" to remove some pollutants, people can breathe cleaner air.
Keywords: Download the courseware "The Highway That Can "Breathe"", download the third-grade Chinese PPT courseware of the Western Normal University edition, download the third-grade Chinese slide courseware, download the PPT courseware "The Highway That Can "Breathe"", .PPT format;
For more information about the "Breathing Highway" PPT courseware, please click on the "Breathing Highway" ppt tab.
"Breathing Highway" PPT Courseware 4:
"Breathing Highways" PPT Courseware 4 1. Have you heard that roads can breathe? 2. Why is breathing in quotation marks? Read the text and understand the topic. Create pollution, quality, reduce, effectively utilize, complex, distance, layout, nitrogen oxides. What does breathing mean? Highways can really breathe...
"Breathing Highway" PPT Courseware 3:
"The Breathing Highway" PPT Courseware 3 Questions and Answers Why does breathing have quotation marks in the title? How do breathing roads breathe? Tips for self-exploration: Ask students to read the text in the way they like. Requirements: 1. Read the pronunciation of the words accurately and understand the meaning of the words in conjunction with the context..
"Breathing Highway" PPT Courseware 2:
"The Breathing Highway" PPT Courseware 2 Questions and Answers Why does breathing have quotation marks in the title? How do breathing roads breathe? ... ... ... Self-exploration tips: (6 minutes) Ask students to read the text in the way they like. Requirements: 1. Read the pronunciation of the characters correctly,...
File Info
Update Time: 2024-09-11
This template belongs to Chinese courseware Western Normal University Edition Third Grade Chinese Volume 1 industry PPT template
"Breathing Highway" PPT courseware Simple campus recruitment activity planning plan summary enterprise and institution recruitment publicity lecture PPT template is a general PPT template for business post competition provided by the manuscript PPT, simple campus recruitment activity planning plan summary enterprise and institution recruitment promotion Lecture PPT template, you can edit and modify the text and pictures in the source file by downloading the source file. If you want more exquisite business PPT templates, you can come to grid resource. Doug resource PPT, massive PPT template slide material download, we only make high-quality PPT templates!
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