大学MOOC 材料化学导论(湖南科技学院)1452803207 最新慕课完整章节测试答案
Module1Introduction
文章目录
Module1Quiz
1、单选题：
According to American Society for Testing Materials, materials are _________.
选项：
A: the matter of the universe
B: these substances having properties that make them useful in structures and machines
C: these substances having properties that make them useful in products and systems
D: these substances having properties that make them useful in structures, machines, devices, products, and systems
答案: 【 these substances having properties that make them useful in structures, machines, devices, products, and systems】
2、单选题：
The term of ______ describes the behavior of materials when subjected to some external force or condition.
选项：
A: application
B: performance
C: properties
D: structures
答案: 【 properties】
3、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-property
答案: 【 structure–property】
4、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】
5、单选题：
_______ is the primary selection criterion that will determine the final choice of materials.
选项：
A: Availability
B: Cost
C: Deterioration
D: Processibility
答案: 【 Cost 】
6、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】
7、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】
8、多选题：
In the materials cycle, which of the following issues should we consider?
选项：
A: Cost
B: Sustainability
C: Biodegradability
D: Recyclability
答案: 【 Sustainability;
Biodegradability;
Recyclability】
9、判断题：
Design for assembly reflects a new concept for disposing of products after their useful life.
选项：
A: 正确
B: 错误
答案: 【 错误】
10、判断题：
Design for disassembly emphasizes easy product assembly by robots and other automated equipment.
选项：
A: 正确
B: 错误
答案: 【 错误】
Video1WhyStudytheCourse
1、多选题：
The examples used to demonstrate the successful application of materials include ________.
选项：
A: vault poles
B: Shenzhou-11 spacecraft
C: Chinese dragon
D: computers
答案: 【 vault poles;
Shenzhou-11 spacecraft;
Chinese dragon】
2、多选题：
The materials used to make the outer shell of the helmets should have the characteristics of _______.
选项：
A: great heat resistance
B: great impact resistance
C: low density
D: great strength
答案: 【 great impact resistance;
great strength】
3、判断题：
The development of materials has gone through several ages, i.e.: Stone Age, Bronze Age, Iron Age, Silicon Age, Polymers Age and Composites Age.
选项：
A: 正确
B: 错误
答案: 【 错误】
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、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】
3、判断题：
Materials engineering focuses on discovering the nature of materials, which in turn leads to theories or descriptions that explain how structure relates to composition, properties and behavior.
选项：
A: 正确
B: 错误
答案: 【 错误】
Video3TheMaterialsCycles
1、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】
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】
Module2StructureofMaterials
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：
Which of the following statement about hydrogen bonding is NOT correct?
选项：
A: Asymmetrical charge distribution
B: Static electrical attraction between positive and negative charges
C: An attraction force between adjacent charges with opposite signs
D: The strongest of the Primary bonding
答案: 【 The strongest of the Primary bonding】
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：
lattice parameters are used to describe a unit cell
选项：
A: Four
B: Five
C: Six
D: Seven
答案: 【 Six】
5、单选题：
Which of the following crystal system has lattice parameters of a=b¹c; a=b=90°, g=120°?
选项：
A: Monoclinic crystal
B: Hexagonal crystal
C: Tetragonal crystal
D: Cubic crystal
答案: 【 Hexagonal crystal 】
6、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】
7、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】
8、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】
9、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】
10、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】
11、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】
12、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】
13、判断题：
Because of allotropy, steel can be produced from iron
选项：
A: 正确
B: 错误
答案: 【 正确】
14、判断题：
In brass, an alloy of Copper and Zinc, Zinc atoms replace Copper atoms to form an interstitial solid solution
选项：
A: 正确
B: 错误
答案: 【 错误】
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】
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
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;
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】