The flood limiting water level is determined by stages because in each stage of the flood season:
A: flood control standards are different
B: the operation goals of the reservoir are different
C: the flood of the design standards are different
D: flood data is insufficient
A: flood control standards are different
B: the operation goals of the reservoir are different
C: the flood of the design standards are different
D: flood data is insufficient
举一反三
- The three elements of design flood are A: the design flood standards, the design flood volumn and the duration of design flood B: flood peak discharge, total flood volumn and flood hydrograph C: design flood peak discharge, one-day and three-day flood volumn D: design flood peak discharge, total design flood volumn and design flood hydrograph
- Which statement about flood is TRUE? A: The flood is portrayed as an instrument of punishment for human transgression in the Bible. B: In Yu’s story, the flood is described as a natural phenomenon. C: Different roles of flood contributed to different themes in these two stories. D: All of the above
- According to different operation methods, reservoir operation can be divided into： A: conventional reservoir operation and optimal reservoir operation B: flood control operation, hydropower generation operation, comprehensive operation C: long-term operation, short-term operation, real-time operation D: single reservoir operation and multiple reservoir operation
- What does the news item say about the flood in the United States What does the news item say about the flood in the United States A．Flood only occurred in parts of Louisiana. B．Flood along the Mississippi River caused casualties. C．Flood in Louisiana was the most serious. D．The flood could be under control soon. A: Flood only occurred in parts of Louisiana. B: Flood along the Mississippi River caused casualties. C: Flood in Louisiana was the most serious. D: The flood could be under control soon.
- 以下哪些属于常见的DDoS攻击类型（） A: ADNS Query Flood B: BICMP Flood C: CSYN Flood D: DHTTP Get Flood