题目内容

What relationship is material science mainly used to study?

A. the structures and components of materials
B. the structures and properties of materials
C. the components and properties of materials
D. the properties and applications of materials

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Which option belongs to the electrical properties of the material?

A. electrical conductivity
B. heat capacity
C. thermal conductivity
D. elastic modulus

Which options belong to the mechanical properties of the material?

A. stiffness
B. dielectric constant
C. strength
D. toughness

Which options belong to the optical properties of the material?

A. electromagnetic
B. reflectivity
C. index of refraction
D. light radiation

Please according to the content of the document provided above, complete the following blanks.Materials are probably more deep-seated in our culture than most of ourrealization. Transportation, ( ), clothing, (), recreation, and ()-virtually every segment of our everyday lives is influenced to one degree or another by materials.