• 2022-06-07 问题

    Some alloying elements are known a‘carbide formers’.What does this term mean?Beyond this,some elements are called very strong,strong or moderate carbide formers.What is meant by this?

    Some alloying elements are known a‘carbide formers’.What does this term mean?Beyond this,some elements are called very strong,strong or moderate carbide formers.What is meant by this?

  • 2022-06-05 问题

    Choose the correct letter, A, B, C or D.Write the correct letter in boxes 22-26 on your answer sheet. Why should Australian formers keep an eye on the Antarctic ocean temperature A: It can help farmers reduce their economic loss. B: It allows for recovery of grassland lost to overgrazing. C: It can help to prevent animals from dying D: It enables astronauts to have a clear view of the Antarctic continent.

    Choose the correct letter, A, B, C or D.Write the correct letter in boxes 22-26 on your answer sheet. Why should Australian formers keep an eye on the Antarctic ocean temperature A: It can help farmers reduce their economic loss. B: It allows for recovery of grassland lost to overgrazing. C: It can help to prevent animals from dying D: It enables astronauts to have a clear view of the Antarctic continent.

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