• 2022-06-07
    Which of the following is not cutting work?( )
    A: Leak opening
    B: Bottom drawing
    C: Vertical groove excavation
    D: Ore break down
  • D

    内容

    • 0

      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

    • 1

      Which of the following are the basic tools used for paper cutting? ( ) A: cutting boards B: Knives C: glue D: Scissors

    • 2

      Which of the following is NOT included in the opening of the presentation?

    • 3

      When we start drawing complicated objects, we can break them down to organic shapes first.

    • 4

      Which of the following disaster is man-made disaster? A: war B: earthquake C: terrorist attacks D: nuclear leak