C.sliver

正确答案：platinum

2、5-2.In fuel cells，the water is produced in which side？

A.anode

B.electrolyte

C.cathode

正确答案：cathode

3、5-3.Which material has the best photocatalytic property？

A.TiO2

B.Al2O3

C.CaO

正确答案：TiO2

4、5-4.which battery is suitable for middle range cars？

A.hybrid

B.full

C.local

正确答案：local

5、5-5.What is the function of XPS？

A.test the volume of sample

B.test the element of sample

C.test the weight of sample

正确答案：test the element of sample

第六章单元测试

1、6-1.which material is not made from carbon？

A.graphite

B.diamond

C.quartz

正确答案：quartz

2、6-2.Which one has the biggest surface to volume ratio

A.earth

B.basketball

C.ping-pong

正确答案：ping-pong

3、6-3.what is the limitation for the magnification of microscope？

A.wavelength of the infrared light

B.wavelength of the visible light

C.wavelength of the uv light

正确答案：wavelength of the visible light