He Hai's best major is hydrology and water resources engineering, which is said to rank first in the country.

Other good majors should be water conservancy and hydropower engineering, civil engineering, geotechnical engineering, farmland water conservancy engineering, ports and waterways.

Examination subjects: ① 10 1 ideological and political theory 2201English 3302 mathematics 24823 geographic information system.

Re-examination subjects: theoretical examination: 929 geographic information system (limited direction 1 and 2); 930 remote sensing principle and application (including cartography) (limited direction 3)