Polyurethane (PU) can be divided into linear structure and body structure according to its structure.
A: 正确
B: 错误
A: 正确
B: 错误
举一反三
- 2 In the data structure, from the storage structure can be divided into ( ). A: dynamic structure and static B: sequential structure and linked structure C: compact structure and non-compact structure D: linear and nonlinear structures
- According to their , buildings are mainly of wood structure, masonry structure, reinforced concrete structure, steel structure and mixed structure.
- The structure of the body text of a letter/email can be divided into ______ ______ ______
- The linked list is a linear structure adopting the storage of . A: sequential structure B: linked structure C: star structure D: net structure
- Proteins are natural polymers of amino acids with primary structure, secondary structure, tertiary structure and quaternary structure.