大学MOOC 材料导论（谢安）(扬州大学)1450851197 最新慕课完整章节测试答案

Module1Quiz

1、单选题：
‎The term of ______ describes the behavior of materials when subjected to some external force or condition.‎
选项：
A: application
B: processing
C: property
D: structure
答案: 【 property】

2、单选题：
‍Materials engineering involves, on the basis of ______ correlations, designing or engineering the structure of a material to produce a predetermined set of properties.‎
选项：
A: structure-nature
B: composition-structure
C: structure–property
D: composition-processing
答案: 【 structure–property】

3、单选题：
‍MSE involves the generation and application of knowledge relating _____ to their _______ and uses, having interdisciplinary and multidisciplinary characteristics.‎
选项：
A: composition of materials, properties
B: composition, structure and processing of materials, properties
C: composition, structure and processing of materials, application
D: structure of materials, application
答案: 【 composition, structure and processing of materials, properties】

4、单选题：
‎___________means that a material, after completing its life cycle in one component, could be reprocessed, could re-enter the materials cycle, and could be re-used in another component.​
选项：
A: Recyclable
B: Biodegradeble
C: Renewable
D: None of the above
答案: 【 Recyclable】

5、单选题：
‎The smart materials have the ability to respond to ____________.​
选项：
A: the environmental changes
B: the changes in temperature
C: the changes in pH value
D: the changes in glucose concentration
答案: 【 the environmental changes】

6、单选题：
‌The four components involved in the discipline of materials science and engineering
include _____.‎
选项：
A: processing, structure, properties, and performance
B: structure, nature, processing and performance
C: synthesis, composition, properties and application
D: synthesis, structure, properties and application
答案: 【 processing, structure, properties, and performance】

7、多选题：
‎In selecting a material for a specific application, which of the following issues should be considered?‏
选项：
A: Cost
B: Availability
C: Processability
D: Recyclability
答案: 【 Cost;
Availability;
Processability;
Recyclability】

8、判断题：
‎Life cycle analysis is used to improve the environmental performance of products.‏
选项：
A: 正确
B: 错误
答案: 【 正确】

9、判断题：
‎Disposal/recycle is the key stage to ensure the last stage to become the first stage of the materials cycle.‌
选项：
A: 正确
B: 错误
答案: 【 正确】

10、判断题：
​The structure of a material depends on how it is processed, and a material's performance is a function of its properties.‌
选项：
A: 正确
B: 错误
答案: 【 正确】

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】

Module2Quiz

1、单选题：
‏The key word to describe the nature of covalent bond is        of electrons‏
选项：
A: sharing
B: swarming
C: transferring
D: spinning
答案: 【 sharing】

2、单选题：
‎The key word to describe the nature of ionic bond is     of electrons‌
选项：
A: sharing
B: swarming
C: transferring
D: spinning
答案: 【 transferring】

3、单选题：
‍Amorphous solids have only        order in the arrangement of constituent particles‏
选项：
A: long-range
B: short-range
C: medium-range
D: None of the above
答案: 【 short-range】

4、单选题：
‌If the unit cell contains an identical component in the center of the cube in addition to those at the corners of the cube, then it is called _________‌‌‌
选项：
A: Simple Cubic
B: Face Centered Cubic
C: Body Centered Cubic
D: NO
答案: 【 Body Centered Cubic】

5、单选题：
​The ability of an element to exist in different space lattices is called      ‍
选项：
A: allotropy
B: crystalline
C: solvent
D: amorphous
答案: 【 allotropy】

6、单选题：
​When impurity atoms are found in the voids or interstices among the host atoms, it is called a/an        solid solution.‎
选项：
A: Substitutional
B: Vacancy
C: Interstitial
D: None of the above
答案: 【 Interstitial】

7、单选题：
‍When impurity atoms replace the host atoms, it is called a/an       solid solution​
选项：
A:  Substitutional
B: Vacancy
C: Interstitial
D: None of the avove
答案: 【  Substitutional】

8、单选题：
‍Which one is the curve that represents the temperatures at which solidification begins?‎
选项：
A: Solidus
B: Liquidus
C: Cooling curve
D: Heating curve
答案: 【 Liquidus】

9、判断题：
‏Primary bonding is the forces within a molecule, while secondary bonding is the forces between molecules‏
选项：
A: 正确
B: 错误
答案: 【 正确】

10、判断题：
​In Polymers, bonds inside the long chain molecules are secondary bonding, bonds among the chains are covalent bonding‍
选项：
A: 正确
B: 错误
答案: 【 错误】

11、判断题：
‎Long range order means the orderly arrangement of atoms extends throughout the entire material.‏
选项：
A: 正确
B: 错误
答案: 【 正确】

12、判断题：
​If you cool molten metal at extremely rapid rate, amorphous metal can form‍
选项：
A: 正确
B: 错误
答案: 【 正确】

13、判断题：
​Both Face-centered cubic and Hexagonal Close-packed are close-packed crystal structures‍
选项：
A: 正确
B: 错误
答案: 【 正确】

14、判断题：
‍Because of allotropy, steel can be produced from iron‍
选项：
A: 正确
B: 错误
答案: 【 正确】

15、判断题：
‎The existence of point defects，impurity atoms, dislocations，grain boundary may all hinder the dislocation movement, hence weaken the materials‌
选项：
A: 正确
B: 错误
答案: 【 错误】

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】

Module3Quiz

1、单选题：
‏Which statement is correct?‏
选项：
A: All materials have a pronounced or obviously yield point.
B: Some materials do not have clear yield point.
C: Grey cast iron does not have yield point
D: None of above is correct.
答案: 【 Some materials do not have clear yield point.】

2、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】

3、单选题：
​After a certain amount of time has elapsed under constant load, the creep strain (plastic deformation) will ______.‌
选项：
A: decrease
B: increase
C: not change
D: be any possible value. 
答案: 【 increase】

4、单选题：
‏The ______ the heat capacity, the _____ the amount of heat needed to produce a temperature change.​
选项：
A: larger, greater
B: larger, smaller
C: lower, greater
D: None of above is correct
答案: 【 larger, greater】

5、多选题：
‎What are correct for describing off-set yield strength?‍
选项：
A: Off-set yield strength is the stress corresponding to the plastic limit.
B: It is the lowest stress at which a limited amount of plastic deformation occurs.
C: Off-set yield strength is the stress corresponding to the elastic limit.
D: If a plastic strain of 0.002 in./in. can be tolerated, the stress that produces this strain is designated asthe yield strength of the material at 0.2% offset.
答案: 【 It is the lowest stress at which a limited amount of plastic deformation occurs.;
If a plastic strain of 0.002 in./in. can be tolerated, the stress that produces this strain is designated asthe yield strength of the material at 0.2% offset.】

6、多选题：
​Which statements are 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: None of the above statement is correct.
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.】

7、多选题：
‍Which of the following statements are correct?‍
选项：
A: The greater the modulus, the stiffer the material.
B: The stiffer the material, the higher the resistance of the material to deformation.
C: The higher the magnitude of elastic modulus, the higher the magnitude of the inter-atomic bonding forces in a material.
D: The higher the magnitude of elastic modulus, the lower the magnitude of the intermolecular bonding forces in a material.
答案: 【 The greater the modulus, the stiffer the material.;
The stiffer the material, the higher the resistance of the material to deformation.;
The higher the magnitude of elastic modulus, the higher the magnitude of the inter-atomic bonding forces in a material.】

8、多选题：
‎Which of the experiments are used for measuring toughness?​
选项：
A: Charpy impact test
B: Izod impact test
C: Knoop Hardness
D: None of the above is correct
答案: 【 Charpy impact test;
Izod impact test】

9、多选题：
‌What are the methods of applying load in a fatigue test?‌
选项：
A:  Constant Stress
B: Temporary Loading
C: Repetitious Stress
D: Reversal Stress
答案: 【 Repetitious Stress;
Reversal Stress】

10、多选题：
​What are the typical methods for penetration testing of hardness?​
选项：
A: Brinell Hardness
B: Vickers Hardness
C: Rockwell Hardness
D: Mohs Hardness
答案: 【 Brinell Hardness;
Vickers Hardness;
Rockwell Hardness】

11、多选题：
​For electrochemical corrosion, the cell consists of four basic components:          ,         ,         , and an external conducting connection between anode and cathode‏
选项：
A: Ions
B: Anode
C: Cathode
D: Electrolyte
答案: 【 Anode;
Cathode;
Electrolyte】

12、判断题：
‏Ductile materials can stand large plastic deformation without fracture.‌
选项：
A: 正确
B: 错误
答案: 【 正确】

13、判断题：
‍Materials with high elastic modulus are typically soft.‎
选项：
A: 正确
B: 错误
答案: 【 错误】

14、判断题：
‏Toughness is the ability or capacity of a material to absorb energy during elastic deformation.‌
选项：
A: 正确
B: 错误
答案: 【 错误】

15、判断题：
​A ductile material will be ductile forever.‏
选项：
A: 正确
B: 错误
答案: 【 错误】

16、判断题：
‍The maximum stress that can be sustained for a specified number of cycles without fracture is called fatigue limit.‎
选项：
A: 正确
B: 错误
答案: 【 错误】

17、判断题：
‏Many nonferrous metals, such as aluminum and other non-ferrous metals exhibit no fatigue limit.‍
选项：
A: 正确
B: 错误
答案: 【 正确】

18、判断题：
‏Creep happens at specific temperatures.‎
选项：
A: 正确
B: 错误
答案: 【 错误】

19、判断题：
‎Higher stress or higher temperature reduces the rupture time and decreases the creep rate.‎
选项：
A: 正确
B: 错误
答案: 【 错误】

20、判断题：
‌A material with high bonding energy has low thermal expansion coefficient.‏
选项：
A: 正确
B: 错误
答案: 【 正确】

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;