To produce artificial noses for practical use, it is essential______.
A: to develop microchips with thousands of odor receptors
B: to invent chips sensitive to various chemicals
C: to design a computer program to sort out smells
D: to find chemicals that can alter the electrical current passing through
A: to develop microchips with thousands of odor receptors
B: to invent chips sensitive to various chemicals
C: to design a computer program to sort out smells
D: to find chemicals that can alter the electrical current passing through
举一反三
- 21. Students entering the design competition have to A: produce an energy-efficient design. B: adapt an existing energy-saving appliance. C: develop a new use for current technology.
- According to the author, the use of chemicals and fertilizers___________.
- To use chemicals and fertilizers means ______. A: to increase the amount of foods B: to increase the quality of foods C: to increase the amount and quality of foods D: to increase essential vitamins and minerals
- 43. According to the author, the use of chemicals and fertilizers ______.
- 精细化学品的英文名为： A: Heavy chemicals B: Fine chemicals C: Refine chemicals D: Special chemicals