大学MOOC 复合材料（解文媛）(扬州大学)1450801241 最新慕课完整章节测试答案
Module1Introduction
文章目录
Video1WhyStudytheCourse
1、单选题：
In the first video of Module 1, the examples used to demonstrate the successful application of materials include ________
选项：
A: high-speed
railways
B: Shenzhou-11
spacecraft
C: Chinese
dragon
D: All
of the above
答案: 【 All
of the above】
2、单选题：
Which of the following characteristics is not desirable for the materials used to make the helmets?
选项：
A: Great heat resistance
B: Great impact resistance
C: High density
D: Great strength
答案: 【 High density】
3、单选题：
Which of the following materials belong to advanced materials？
选项：
A: Functional
materials
B: Smart
materials
C: Biomaterials
D: All
of the above
答案: 【 All
of the above】
4、判断题：
The smart materials can respond to the environmental changes.
选项：
A: 正确
B: 错误
答案: 【 正确】
Video2MSEandmaterialsselection
1、单选题：
_______ is the rule in materials selection.
选项：
A: Compromise
B: Cost effectiveness
C: In-service conditions
D: Ideal combination of properties
答案: 【 Compromise】
2、单选题：
There are ____ components involved in the discipline of materials science and engineering.
选项：
A: three
B: four
C: five
D: six
答案: 【 four】
3、多选题：
The term materials science and engineering combine both _______ and ________.
选项：
A: materials science
B: materials engineering
C: materials technology
D: materials processing
答案: 【 materials science;
materials engineering】
Video3TheMaterialsCycles
1、单选题：
Which of the following is not the approaches used to minimize any possible adverse impacts on the environment at all stages of the materials cycle?
选项：
A: life cycle analysis
B: life cycle assessment
C: green design
D: design for assembly
答案: 【 design for assembly】
2、多选题：
Which of the following step(s) belongs (or belong) to materials cycles?
选项：
A: Extracting raw materials
B: Creating bulk materials
C: Fabricating products and system
D: Recycling and disposal
答案: 【 Extracting raw materials;
Creating bulk materials;
Fabricating products and system;
Recycling and disposal】
3、判断题：
The materials cycle is a system that involves interactions and exchanges among materials, energy, and the environment.
选项：
A: 正确
B: 错误
答案: 【 正确】
Video4FamilyofMaterials
1、单选题：
Which of the following is not ceramics?
选项：
A: Porcelain
B: Magnesium
C: Glass
D: Structural clay
答案: 【 Magnesium】
2、判断题：
Advanced materials include semiconductors, biomaterials, smart materials and nanomaterials.
选项：
A: 正确
B: 错误
答案: 【 正确】
Module2StructureofMaterials
Video10Phasediagram
1、单选题：
A homogeneous part or aggregation of material that differs from another part due to difference in structure
选项：
A: Liquidus
B: Solidus
C: Solution
D: Phase
答案: 【 Phase】
2、多选题：
When an alloy is at a temperature above the solidus but below the liquidus, it coexists as ___________
选项：
A: Liquid
B: Gas
C: Solid
D: Plasma
答案: 【 Liquid;
Solid】
3、判断题：
The Gibbs rule represents a criterion for the number of phases that coexist within a system at equilibrium
选项：
A: 正确
B: 错误
答案: 【 正确】
Video1PrimaryBonds
1、单选题：
The bonding type of Aluminum is
选项：
A: Ionic bondingIonic bonding
B: Metallic bonding
C: Covalent bonding
D: Hydrogen bonding
答案: 【 Metallic bonding】
Video2SecondaryBonds
1、单选题：
O2 is a molecule
选项：
A: Polar
B: Non-Polar
C: No
D: No
答案: 【 Non-Polar】
2、判断题：
Because of hydrogen bonding, hydrogen fluoride (HF) has a higher boiling point than hydrogen chloride (HCl)
选项：
A: 正确
B: 错误
答案: 【 正确】
Video3CrystallineandAmorphousSolids
1、单选题：
Amorphous metals develop their miscrostructure as a result of _______
选项：
A: Dendrites
B: Directional solidification
C: Slip
D: Extremely rapid cooling
答案: 【 Extremely rapid cooling】
2、多选题：
A crystalline solid has
选项：
A: Long-range order
B: Distinctive X-ray pattern
C: Irregular arrangement of atoms
D: No
答案: 【 Long-range order;
Distinctive X-ray pattern】
Video4UnitCellsandSpaceLattices
1、判断题：
When stacked together, the unit cells form the whole crystal
选项：
A: 正确
B: 错误
答案: 【 正确】
2、判断题：
The periodicity of any single crystal can be described by an equivalent space lattice
选项：
A: 正确
B: 错误
答案: 【 正确】
Video5CrystalSystems
1、判断题：
In crystallography, there are eight crystal systems and 14 Bravais lattices
选项：
A: 正确
B: 错误
答案: 【 错误】
Video6PolymorphismandAllotropy
1、判断题：
Any crystal structure changes in a material produces different properties.
选项：
A: 正确
B: 错误
答案: 【 正确】
2、判断题：
Tin pest occurs because of an allotropic change of Tin below 13.2oC
选项：
A: 正确
B: 错误
答案: 【 正确】
Video7PointDefectsandCrystalImpurites
1、判断题：
Steel is an interstitial solid solution with impurity carbon atoms in iron crystal lattice
选项：
A: 正确
B: 错误
答案: 【 正确】
Video8LineDefectsandDislocationMovement
1、判断题：
Dislocations make it easier for slip or plastic deformation to occur.
选项：
A: 正确
B: 错误
答案: 【 正确】
2、判断题：
A ductile metal becomes harder and stronger as it is subjected to cold working
选项：
A: 正确
B: 错误
答案: 【 正确】
Video9AreaDefects
1、单选题：
If a crystalline solid consists of a number of grains, such material is called
选项：
A: A Polycrystalline Solid
B: An Amorphous Solid
C: A Single Crystal
D: No
答案: 【 A Polycrystalline Solid】
2、判断题：
Internal atoms have missing bonds, so, they are in higher energy states than surface atoms
选项：
A: 正确
B: 错误
答案: 【 错误】
Module3PropertiesofMaterials
Video10ThermalExpansion
1、判断题：
Material with high bonding energy has low thermal expansion coefficient.
选项：
A: 正确
B: 错误
答案: 【 正确】
Video11ThermalConductivity
1、判断题：
Polymers transmit heat mainly through free electrons.
选项：
A: 正确
B: 错误
答案: 【 错误】
Video1StressandStrain
1、单选题：
Which equation describes the Engineering strain?
选项：
A: 
B: 
C: 
D: 
答案: 【 】
2、多选题：
What information you can find in a stress-strain diagram?
选项：
A: Elastic modulus
B: Yield Point
C: Ultimate Strength
D: Fracture Point
答案: 【 Elastic modulus;
Yield Point;
Ultimate Strength;
Fracture Point】
Video2ElasticandPlasticDeformation
1、多选题：
Which of the below terms have same meaning?
选项：
A: Ultimate Strength
B: Tensile Strength
C: Yield Strength
D: Uniform Strain
答案: 【 Ultimate Strength;
Tensile Strength】
2、判断题：
A material subjects to a deformation under force and can go back to its original shape. We call the material undergoes an elastic deformation.
选项：
A: 正确
B: 错误
答案: 【 正确】
Video3Ductility
1、单选题：
In a stress-strain diagram, which region refers to ductile property?
选项：
A: Elastic Region
B: Plastic Region
C: Elastic and Plastic Region
D: No
答案: 【 Elastic and Plastic Region】
2、多选题：
Which statement is correct?
选项：
A: The area under which the straight-line portion (elastic region) of the stress-strain curve is modulus of resilience
B: Modulus resilience is a measure of the energy per unit volume that the material can absorb without plastic deformation
C: Resilience tells you the capacity of a material to adsorb energy when it is deformed elastically and then, upon unloading, to have this energy recovered
D: No
答案: 【 The area under which the straight-line portion (elastic region) of the stress-strain curve is modulus of resilience;
Modulus resilience is a measure of the energy per unit volume that the material can absorb without plastic deformation;
Resilience tells you the capacity of a material to adsorb energy when it is deformed elastically and then, upon unloading, to have this energy recovered】
Video4Toughness
1、单选题：
_____is defined as a sudden application of a load confined to a localized area of a material.
选项：
A: Stretch
B: Compress
C: Punch
D: Impact
答案: 【 Impact】
2、多选题：
Which of the below statement are correct?
选项：
A: Impact test is a typical static testing method.
B: Toughness is a measure of a material’s resistance to brittle fracture when a crack is present.
C: A material’s tensile stress tends to gradually increase with the size of the crack increases.
D: Fracture toughness is used in design to find allowable flaw size.
答案: 【 Toughness is a measure of a material’s resistance to brittle fracture when a crack is present.;
Fracture toughness is used in design to find allowable flaw size.】
Video5Ductile-to-BrittleTransition
1、单选题：
Adding more carbon, the steel show ___transition temperature ranges.
选项：
A: Wider
B: Narrower
C: Same
D: No
答案: 【 Wider】
2、判断题：
High temperature may change a ductile material into brittle.
选项：
A: 正确
B: 错误
答案: 【 错误】
3、判断题：
A brittle material has very little plastic deformation.
选项：
A: 正确
B: 错误
答案: 【 正确】
4、判断题：
When broken, cross-section image of a ductile material has flake-like structure.
选项：
A: 正确
B: 错误
答案: 【 错误】
Video6Fatigue
1、单选题：
The _____ the stress is applied to the material, the less cycle it will endure before its failure.
选项：
A: Lower
B: Higher
C: Quick
D: Slow
答案: 【 Higher】
2、单选题：
Fatigue limits of a typical ferrous alloy is about____ tensile strength.
选项：
A: Half
B: 1/3
C: 1/4
D: 1/5
答案: 【 Half】
3、判断题：
All materials have a fatigue limit.
选项：
A: 正确
B: 错误
答案: 【 错误】
Video7Creep
1、多选题：
Which statements about creep forming is correct?
选项：
A: A workpiece is loaded against a die or tool for a specific time
B: The load is normally applied using pressure or vacuum at temp. around 600°C
C: The process results in predetermined shapes that required little or no machining
D: No
答案: 【 A workpiece is loaded against a die or tool for a specific time;
The process results in predetermined shapes that required little or no machining】
2、判断题：
Creep happens at specific temperatures.
选项：
A: 正确
B: 错误
答案: 【 错误】
3、判断题：
The creep rate is higher at a high temperature.
选项：
A: 正确
B: 错误
答案: 【 正确】
Video8Hardness
1、单选题：
What is range of Mohs Scale?