题目内容
（请给出正确答案）
______ is the name of the recently discovered carbon structure that resembles a soccer ball.
A) Diamond
B) Graphite
C) Fullerene
D) Nanotube
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A) Heat capacity
B) Specific heat
C) Thermal conductivity
D) Coefficient of thermal expansion
A) allowablestress
B) designstress
C) factorofsafety
D) safe stress
A) Elastic modulus is also known as Young's modulus
B) The higher the magnitude ofelastic modulus the stiffer the material
C) Elastic modulus can be measured graphically in the elastic region ofthe stress-strain diagram
D) The higher the magnitude of elastic modulus the weaker the interatomic bonding forces
A) ＜ ＞
B) ( )
C) [ ]
D) { }
A) σ-ε
B) s-N
C) τ-γ
D) T-θ
A) Thermal conductivity ofmaterials has a varied relationship to temperature.
B) Oriented polymers have much lower conductivities than unoriented polymers.
C) Incorporation of element to metals reduces the thermal conductivity.
D) Metals have comparatively high thermal conductivities while polymers have rather low values.
A) Noble gases
B) Active
C) Group 5 elements
D) Stable
A) Hardness test
B) Impact test
C) Tensile test
D) Tensile creep test
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