Which is the correct removal sequence of the equipment in the fully mechanized working face? ( ) A: Scraper conveyor, double-drum shearer, retractable belt conveyor, hydraulic support B: Double-drum shearer, retractable belt conveyor, scraper conveyor, hydraulic support C: Double-drum shearer, scraper conveyor, retractable belt conveyor, hydraulic support D: Retractable belt conveyor, double-drum shearer, scraper conveyor, hydraulic support

At present, the cutting depth of shearer in China tends to decrease.

At present, the cutting depth of shearer in China tends to decrease. A: 正确 B: 错误

The body of shearer in thin seam should be as ( ) as possible. A: Long B: Short C: High D: No requirements

Which of the following is not the common cutting depth of drum shearer? ( ) A: 0.6m B: 0.8m C: 0.3m D: 1.0m

What are the main selection of equipment in the fully mechanized working face? ( ) A: Selection of fully mechanized support B: Selection of Shearer C: Selection of face conveyor D: Selection of conveyor in gateway