在TRIZ理论中,发明的第三等级是()。
A. 专利
B. 合理化建议
C. 适度新型革新
D. 综合性重要专利
TRIZ理论主要应用于军事、航天和航空领域。()
A. 对
B. 错
I just got back __________ London.
A. from
B. to
C. off
D. of
A:_______ did you find the city of London?B: It's really great! It has lots of famous tourist attrations.
A. What
B. How
C. Where
D. Whose