The craft or family stage is characterized by the absence of formal policies, objectives, and structure.
举一反三
- The hostility stage is characterized by ______, _______, ________, __________.
- The _____________ structure will develop into a hierarchical structure.
- All proteins have the primary structure, secondary structure and tertiary structure.
- According to their , buildings are mainly of wood structure, masonry structure, reinforced concrete structure, steel structure and mixed structure.
- Proteins are natural polymers of amino acids with primary structure, secondary structure, tertiary structure and quaternary structure.