The structure shown below is a stable structure. [img=198x202]1803b7fb2449caf.jpg[/img]
举一反三
- 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.
- All proteins have the primary structure, secondary structure and tertiary structure.
- The _____________ structure will develop into a hierarchical structure.
- The structure shown is a _____. 下面的结构属于什么类型的结构？[img=737x157]17de916257253c9.png[/img] A: truss 桁架 B: rigid frame 刚架 C: beam 梁 D: composite structure 复合结构