• 2022-05-31
    Ore can be divided into and lean ore according to grade.
  • rich ore

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    • 0

      The iron ore is one of the chief exports of( ).

    • 1

      Which of the following is the most abundant solid mineral in the seabed?( ) A: Manganese nodule B: Nickel ore C: Copper mine D: Cobalt ore

    • 2

      Iron ore can’t commonly be loaded with___. A: conveyor belts B: grabs C: chutes D: slings

    • 3

      According to function, sentences can be divided into ______________.

    • 4

      A self-introduction can be divided into ( ) ones according to the use of language._