• 2022-05-28
    There is little difference between the quantity of mine development and the new mine development.
  • 内容

    • 0

      Agricultural development simply must ________ economic development.

    • 1

      I_____a little earlier, but I met a friend of mine on the way.

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      From its contents' page, we know that the book mainly discusses A: German development policy. B: German rural development. C: German development assistance. D: German development agencies.

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      There is little difference between the two words. A: There B: little C: difference D: words

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      Which of the following is not a major problem to be solved in mine field development method?( ) A: Mining methods B: Shaft (adit) form C: Number of mining levels D: Layout of main haulage roadway