• 2021-04-14
    The structure of "Then came the big trip to the spelling bee competition" is a reversed (倒装的) structure.



  • 内容

    • 0

      According to their , buildings are mainly of wood structure, masonry structure, reinforced concrete structure, steel structure and mixed structure.

    • 1

      Proteins are natural polymers of amino acids with primary structure, secondary structure, tertiary structure and quaternary structure.

    • 2

      All proteins have the primary structure, secondary structure and tertiary structure.

    • 3

      The _____________ structure will develop into a hierarchical structure.

    • 4

      Polyurethane (PU) can be divided into linear structure and body structure according to its structure. A: 正确 B: 错误