According to TRIZ's classification of innovation, "Asymmetric design of 737 engine cover" belongs to ()
A. Level 1: obvious solution
B. Level 4: new concept
C. Level 3: radical improvement
D. Level 2: minor improvements
查看答案
According to TRIZ's classification of innovation, "The plane,PC" belongs to ()
A. Level 5: invention
B. Level 2: minor improvements
C. Level 3: radical improvement
D. Level 4: new concept
The infantile life curve of the system is characterized by()
A. Value and potential emerge, a large number of people, material and financial input, efficiency and performance are improved, more investment is attracted, the system is developing rapidly
B. Low efficiency, poor reliability, lack of human and material input, slow development of the system
C. The system is becoming more and more perfect, the performance level is the best, the profit is the biggest and has a downward trend, the research results are relatively low
D. Technology reaches the limit, it is difficult to have a new breakthrough, will be replaced by a new technical system
The decline life curve of the system is characterized by()
A. Low efficiency, poor reliability, lack of human and material input, slow development of the system
B. Value and potential emerge, a large number of people, material and financial input, efficiency and performance are improved, more investment is attracted, the system is developing rapidly
C. The system is becoming more and more perfect, the performance level is the best, the profit is the biggest and has a downward trend, the research results are relatively low
D. Technology reaches the limit, it is difficult to have a new breakthrough, will be replaced by a new technical system
The maturity life curve of the system is characterized by()
A. The system is becoming more and more perfect, the performance level is the best, the profit is the biggest and has a downward trend, the research results are relatively low
B. Value and potential emerge, a large number of people, material and financial input, efficiency and performance are improved
C. Low efficiency, poor reliability, lack of human and material input, slow development of the system
D. Technology reaches the limit, it is difficult to have a new breakthrough, will be replaced by a new technical system
微信支付 
支付宝支付