Which of the following devices is common to both mechanical and hydraulic governors?（）
举一反三
- Which of the following devices is a common basic element with nearly all mechanical governors?（）
- Which of the following is not included in the ore transportation method?( ) A: Gravity transportation B: Mechanical transportation C: Drilling transportation D: Hydraulic transportation
- The common cohesive devices in both languages include reference, substitution, ellipsis and lexical cohesion.
- Which of the following is the ore breaking methods?( ) A: Artificial ore breaking B: Mechanical and hydraulic ore breaking C: Rock drilling and blasting D: The other three options all meet the requirements
- Which of the following are typical mechanical activities?