智慧树知到《纳米新纪元》章节测试答案

第一章单元测试

1、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、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、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、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、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、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、3-4.Which particle has the antibacterial properties？

A.silver nanoparticles

B.sodium nanoparticles

C.silicon nanoparticles

正确答案：silver nanoparticles

5、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、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、4-2.which is the best material for heat insulation？

A.water

B.vacuum

C.cotton

正确答案：vacuum

3、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

4、4-4.In STM testing， when the material is getting closer to the microscope tip， the current will（become）？

A.bigger

B.smaller

C.not change

正确答案：bigger

5、4-5.Which one is not the advantage of OLED TV？

A.Wide angle of view

B.Less power

C.Cheaper than conventional LCD TV in a short term

正确答案：Cheaper than conventional LCD TV in a short term

第五章单元测试

1、5-1.Which is the normal catalyst for fuel cells in anode？

A.platinum

B.aluminum