Compared with the district, there is no in the roadway system of the strip district, and the roadway system is greatly simplified.
举一反三
- Stages can be further divided into( ). A: Mining district B: Panel C: Strip district D: Section
- The section arranged by the panel roadway is divided into rectangles, and the section roadway is excavated along .
- Which district is the youngest? A: District 2 B: District 3 C: District 4 D: District 5
- When the whole（ ） is cut off, the power system will be disconnected or even paralyzed. A: Intermediate substation B: Hub substation C: District substation D: Terminal substation
- The immune system is compared to a library.