The is usually laid in haulage way of zone to transport coal.
举一反三
- Which of the following is not a common type of rise coal haulage ( )? A: Pipeline haulage B: Belt conveyor haulage C: Tramcar haulage D: Autogenous haulage
- Rail transport uses different types of wagons for different goods, usually are used for move coal and aggregates.
- Which tunnels can be shared by multiple coal seams? （ ） A: Rise and dip B: District cross-cut C: District station D: Haulage way of section
- In criminal cases,the burden of proof is usually laid on the prosecution.
- Which of the following is not a common way for coal caving? ( ) A: Top caving coal in group sequence B: Top caving coal in single cycle sequence C: Top caving coal in multiple cycles in sequence D: Top caving coal in intervals of single cycle