Joke Collection Website - Talk about mood - Read the following and complete the question. ① History:/kloc-0 On February 25th, 933, an earthquake measuring 7.5 on the Richter scale suddenly occurred in Diexi area, Maoxian County, Sichuan Provinc
Read the following and complete the question. ① History:/kloc-0 On February 25th, 933, an earthquake measuring 7.5 on the Richter scale suddenly occurred in Diexi area, Maoxian County, Sichuan Provinc
2. The second paragraph explains the reasons and types of dammed lakes, and the third paragraph explains that "stable dammed lakes generally do not pose a threat to human beings", and at the same time leads to the following? This paper expounds the harm of unstable dammed lake to human beings.
3. "Instability" is reflected in: the blockage of the dammed lake will collapse due to scouring, erosion and dissolution; The dammed lake with loose soil as accumulation body is relatively easy to break.
4. "General" here means roughly and roughly, indicating that the data measured by remote sensing technology and comparative analysis are more accurate (not very accurate).
5. Accurately judge the nature of the dammed lake; Determine the relevant data of Hanyan Lake; Implement flood control; Make emergency plans for downstream dangerous areas.
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