2024知到网课 纳米新纪元智慧树答案

第一章 单元测试

1、单选题：1-1. what is nano scale？
A:10^(-3)~10^(-5)m
B:10^(-5)~10^(-7)m
C:10^(-7)~10^(-9)m
正确答案:【10^(-7)~10^(-9)m】

2、单选题：1-2.Which of the following options is closer to nano size?
A: hair
B: H7N9 virus
C: red blood cells
正确答案:【 H7N9 virus】

第二章 单元测试

1、单选题：2-1. What is the size of fibers that in our cloth？
A:millimeter
B:micrometer
C:nanometer
正确答案:【micrometer】

第三章 单元测试

1、单选题：3-1.What is the function of intelligent inks in food package?
A:detecting toxicity
B:detecting oxygen
C:detecting water
正确答案:【detecting oxygen】

2、单选题：3-2.What factors do affect the amount of the bacteria grows in packaged food?
A: The type of the packaged food
B: Temperature and time
C: The structure of bacteria
正确答案:【 Temperature and time】

3、单选题：3-3.Which is the method to make big materials become small?
A: top-down
B: left-right
C: bottom-up
正确答案:【 top-down】

4、单选题：3-4.Which particle has the antibacterial properties?
A:silver nanoparticles
B:sodium nanoparticles
C:silicon nanoparticles
正确答案:【silver nanoparticles】

5、单选题：3-5.What is the full name of STM that used to see nanostructures?
A:scanning tunneling microscope
B:simulated test marketing
C:synchronous transfer module
正确答案:【scanning tunneling microscope】

第四章 单元测试

1、单选题：4-1.Which is the basic materials for led?
A:inorganic materials
B:organic materials
C:metal materials
正确答案:【organic materials】

2、单选题：4-2.which is the best material for heat insulation?
A:

water

B:

vacuum

C:

cotton

正确答案:【

vacuum

】

3、单选题：4-3.What is the working principle for LED?
A:convert electric to light
B:

convert electric to heat

C:

convert light to electric

正确答案:【convert electric to light 】