【简答题】Limit state design is a design (1) (methodology) used by structural and civil engineers. Structures and buildings are usually designed to (2) ______ with codes that are based on limit state theory. A ...
【判断题】Neutrons have essentially the same mass as protons. They contribute to the structural stability of the nucleus—if there are too many or too few, the nucleus may disintegrate by radioactive decay—but t...