博蛾海掀背桓恭混慌岛烩镁休
第一章Introduction
0226签到答题
1、填空题：
汉译英复合材料
答案: composite
2、填空题：
汉译英聚合物
答案: polymer
3、填空题：
汉译英陶瓷材料
答案: Ceramics##%_YZPRLFH_%##China
4、填空题：
英译汉 smart materials
答案: 智能材料
5、填空题：
英译汉 silicon age
答案: 硅时代
6、填空题：
英译汉 coating
答案: 涂料
03.02签到答题
1、填空题：
请写出下面几个原子学说科学家的中文名（姓）J. Dalton, J. J. Thomson, N. Bohr, E. Schrodinger， D. I. Mendeleev
答案: 道尔顿 汤姆逊 波尔 薛定谔 门捷列夫
2、填空题：
2 英译汉orbit，Quantum number，Periodic Table，Alkaline Metal， metalloid
答案: 轨道 量子数 元素周期表 碱金属 类金属
3、填空题：
3. 英译汉 Secondary interatomic bonding: oritation force, induction force, dispersion force and hytrogen bonding
答案: 次级原子间作用力：取向力，诱导力，色散力 和氢键
4、填空题：
4. 请写出三种Chemical bonding的名字（逗号分开）
答案: ionic bonding，covalent bonding，metallic bongding
5、填空题：
5. –has reported to be the lightest metal
答案: Li##%_YZPRLFH_%##Lithium
选择题和判断题
1、单选题：
下面哪种材料不属于先进材料？
A: Graphene
B: Nanomaterial
C: Steel
D: Semiconductor
答案: Steel
2、多选题：
材料可分为哪些类？
A: Metals
B: Ceramics
C: Polymers
D: Composites
答案: Metals;
Ceramics;
Polymers;
Composites
3、多选题：
研究材料时应关注以下哪个因素？
A: Microstructure
B: Properties
C: Synthesis
D: Performance
答案: Microstructure;
Properties;
Synthesis;
Performance
4、判断题：
不同材料里灌装的可乐喝起来一样，所以材料没区别。
A: 正确
B: 错误
答案: 错误
5、判断题：
Property和Performance内涵一样。
A: 正确
B: 错误
答案: 错误
第二章AtomicStructureandInteratomicBonding
0304签到答题
1、判断题：
15 判断 Crystalline solids or crystals tends to have relatively sharp, well-defined melting points.
A: 正确
B: 错误
答案: 正确
2、填空题：
汉译英 金刚石 (全小写)
答案: diamond
3、填空题：
2 英译汉 Graphite
答案: 石墨
4、填空题：
3 汉译英 阳离子
答案: cation
5、填空题：
4 汉译英 极性分子
答案: polar molecule
6、填空题：
6 汉译英 晶体结构
答案: crystalline structure
7、填空题：
5 英译汉 adhesive tape
答案: 胶带
8、填空题：
7 汉译英 无定形态
答案: amorphous
9、填空题：
8 英译汉 insulator
答案: 绝缘体
10、填空题：
10 汉译英 空间点阵
答案: space lattics
11、填空题：
11 汉译英 同素异形体
答案: allotropy
12、填空题：
12 汉译英 多态相
答案: polymorphism
13、填空题：
13 填空 Maters can exist in four states：solid，liquid，gas and– 。
答案: plasma
14、填空题：
14 填空 Uasally metals and ceramics except glass are crystalline solids, while polymers are—or—solids.（两个空，两个单词，空格分开）
答案: semicrystalline amorphous##%_YZPRLFH_%##amorphous semicrystalline
15、填空题：
16 汉译英 离域的
答案: delocalized
16、填空题：
9 英译汉 unit cells
答案: 晶胞
北化第二讲单元测试题
1、单选题：
1单选 The key word to describe the nature of covalent bond is of electrons
A: A. sharing
B: B. swarming
C: C. transferring
D: D. spinning
答案: A. sharing
2、单选题：
2单选The key word to describe the nature of ionic bond is of electrons
A: A. Sharing
B: B. swarming
C: C.Transferring
D: D.spinning
答案: C.Transferring
3、单选题：
6单选Amorphous solids have only order in the arrangement of constituent particles
A: A.long-range
B: B.short-range
C: C.medium-range
D: D.None of the above
答案: B.short-range
4、单选题：
9单选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 ________
A: A.Simple Cubic
B: B.Face Centered Cubic
C: C.Body Centered Cubic
D: D.NO
答案: C.Body Centered Cubic
5、单选题：
10单选The ability of an element to exist in different space lattices is called
A: A.allotropy
B: B.crystalline
C: C.solvent
D: D.Amorphous
答案: A.allotropy
6、单选题：
12单选When impurity atoms are found in the voids or interstices among the host atoms, it is called a/an solid solution.
A: A.Substitutional
B: B.Vacancy
C: C.Interstitial
D: D.None of the above
答案: C.Interstitial
7、单选题：
13.单选When impurity atoms replace the host atoms, it is called a/an solid solutionA. Substitutional
A: A. Substitutional
B: B. Vacancy
C: C. Interstitial
D: D. None of the avove
答案: A. Substitutional
8、单选题：
15单选Which one is the curve that represents the temperatures at which solidification begins?
A: A.Solidus
B: B.Liquidus
C: C.Cooling curve
D: D.Heating curve
答案: C.Cooling curve
9、判断题：
3判断Primary bonding is the forces within a molecule, while secondary bonding is the forces between molecules
A: 正确
B: 错误
答案: 正确
10、判断题：
4判断In Polymers, bonds inside the long chain molecules are secondary bonding, bonds among the chains are covalent bonding
A: 正确
B: 错误
答案: 正确
11、判断题：
5判断Long range order means the orderly arrangement of atoms extends throughout the entire material.
A: 正确
B: 错误
答案: 错误
12、判断题：
8判断Both Face-centered cubic and Hexagonal Close-packed are close-packed crystal structures
A: 正确
B: 错误
答案: 正确
13、判断题：
11判断Because of allotropy, steel can be produced from iron
A: 正确
B: 错误
答案: 错误
14、判断题：
14判断The existence of point defects，impurity atoms, dislocations，grain boundary may all hinder the dislocation movement, hence weaken the materials
A: 正确
B: 错误
答案: 错误
15、判断题：
7判断)If you cool molten metal at extremely rapid rate, amorphous metal can form
A: 正确
B: 错误
答案: 正确
北化第二讲课件学习(1)
1、单选题：
1.The bonding type of Aluminum is—
A: A. Ionic bondingIonic bonding
B: B. Metallic bonding
C: C. Covalent bonding
D: D. Hydrogen bonding
答案: B. Metallic bonding
2、单选题：
2.O2 is a molecule.
A: A. Polar
B: B. Non-Polar
C: C. No
D: D. No
答案: B. Non-Polar
3、单选题：
3. Amorphous metals develop their miscrostructure as a result of _______
A: A.Dendrites
B: B.Directional solidification
C: C.Slip
D: D.Extremely rapid cooling
答案: D.Extremely rapid cooling
4、单选题：
4. A crystalline solid has _______
A: A. Long-range order
B: B.Distinctive X-ray pattern
C: C.Irregular arrangement of atoms
D: D.No
答案: A. Long-range order
5、判断题：
5. Because of hydrogen bonding, hydrogen fluoride (HF) has a higher boiling point than hydrogen chloride (HCl)
A: 正确
B: 错误
答案: 正确
6、判断题：
6.When stacked together, the unit cells form the whole crystal
A: 正确
B: 错误
答案: 正确
7、判断题：
7. The periodicity of any single crystal can be described by an equivalent space lattice
A: 正确
B: 错误
答案: 正确
8、判断题：
8. In crystallography, there are eight crystal systems and 14 Bravais lattices
A: 正确
B: 错误
答案: 错误
9、判断题：
9. Any crystal structure changes in a material produces different properties.
A: 正确
B: 错误
答案: 正确
10、判断题：
10.Tin pest occurs because of an allotropic change of Tin below 13.2oC
A: 正确
B: 错误
答案: 正确
北化第二讲课件学习(2)
1、单选题：
1. If a crystalline solid consists of a number of grains, such material is called –
A: A Polycrystalline Solid
B: An Amorphous Solid
C: A Single Crystal
D: No
答案: A Polycrystalline Solid
2、单选题：
2. A homogeneous part or aggregation of material that differs from another part due to difference in structure
A: Liquidus
B: Solidus
C: Solution
D: Phase
答案: Phase
3、单选题：
3. When an alloy is at a temperature above the solidus but below the liquidus, it coexists as ___________
A: Liquid，solid
B: Gas，solid
C: Liquid, gas
D: Plasma
答案: Liquid，solid
4、判断题：
4.Steel is an interstitial solid solution with impurity carbon atoms in iron crystal lattice
A: 正确
B: 错误
答案: 正确
5、判断题：
5. Dislocations make it easier for slip or plastic deformation to occur.
A: 正确
B: 错误
答案: 正确
6、判断题：
6. A ductile metal becomes harder and stronger as it is subjected to cold working
A: 正确
B: 错误
答案: 正确
7、判断题：
7. Internal atoms have missing bonds, so, they are in higher energy states than surface atoms
A: 正确
B: 错误
答案: 错误
8、判断题：
8.The Gibbs rule represents a criterion for the number of phases that coexist within a system at equilibrium
A: 正确
B: 错误
答案: 正确
选择题与判断题
1、单选题：
按照下面电子层的排列顺序，电子的能量逐渐升高。
A: L、M、K、N、O
B: M、N、K、L、O
C: K、L、M、N、O
D: O、N、M、L、K
答案: K、L、M、N、O
2、单选题：
Fe的外围电子排布式是？
A: 1s22s22p63s23p64s23d6
B: 1s22s22p63s23p63d64s2
C: 1s22s22p63s23p63d8
D: 1s22s22p63s23p63d24s24p2
答案: 1s22s22p63s23p63d64s2
3、单选题：
核外电子排布的轨道能量，下面错误的是？
A: 2s<3s
B: 3d<4s
C: 3d<4d
D: 3s<3p
答案: 3d<4s
4、判断题：
The Pauli exclusion principle is the quantum
mechanical principle which states that two or more identical fermions
(particles with half-integer spin) can occupy the same quantum state within a
quantum system simultaneously.
A: 正确
B: 错误
答案: 错误
5、判断题：
Atoms are made from a nucleus of protons and neutrons and a cloud of electrons.
A: 正确
B: 错误
答案: 正确
选择题和判断题
1、单选题：
Which kind of bonding will be mainly existed in ceramics?
A: Covalent bond
B: Metallic bonding
C: Ionic bonding
D: Hydrogen bond
答案: Ionic bonding
2、多选题：
Electrons in atoms would follow these principles.
A: Pauli exclusion
B: lowest energy
C: Hund rule
D: Hooke law
答案: Pauli exclusion;
lowest energy;
Hund rule
3、多选题：
The following bonds can be treated as weak bonds or secondary bonds.
A: dipole–dipole interactions
B: the London dispersion force
C: hydrogen bonding
D: metallic bonding
答案: dipole–dipole interactions;
the London dispersion force;
hydrogen bonding
4、判断题：
Metal atoms become anions after they lost electrons.
A: 正确
B: 错误
答案: 错误
5、判断题：
When voltage is applied to an ionic material, entire ions must move to cause a current to flow, therefore, the electrical conductivity is very good.
A: 正确
B: 错误
答案: 错误
第三章TheStructureofCrystallineSolids
0309签到答题
1、填空题：
1 Crystalline defects 英译汉
答案: 晶体缺陷
2、填空题：
2 点缺陷(复) 汉译英
答案: point defects
3、填空题：
3 面缺陷(复) 汉译英
答案: area defects
4、填空题：
4 填空 Point defects of crystals can be classified as vacancy, impurity atoms and –(间隙原子缺陷 复)
答案: interstitial defects
5、填空题：
5 Dislocations 英译汉
答案: 位错
6、填空题：
6 填空 One of the most obvious boundaries is external surface. Another area defect is along–(晶粒边界 复)
答案: grain boundaries
7、填空题：
7. 相图 汉译英
答案: phase diagram
8、填空题：
8 冷却曲线 汉译英
答案: cooling curve
9、填空题：
9 Level rule 英译汉
答案: 杠杆定律
10、填空题：
10. Gibbs phase line 吉布斯相率 公式 —–(大写，无空格) P+F=C+N
答案: P+F=C+N
11、填空题：
11 机械性质(复) 汉译英 mechanical properties
答案: mechanical properties
12、填空题：
12 应力 汉译英
答案: stress
13、填空题：
13 应变 汉译英
答案: strain
14、填空题：
14 Tension英译汉
答案: 拉伸
15、填空题：
15 Compression英译汉
答案: 压缩
16、填空题：
16 弹性形变(单) 汉译英
答案: elastic deformation
17、填空题：
plastic deformation 英译汉
答案: 塑性形变
18、填空题：
18 elastic modulus英译汉
答案: 弹性模量
19、填空题：
刚度 汉译英
答案: stiffness
20、填空题：
20 屈服强度 汉译英
答案: yield strength
21、填空题：
21 拉伸强度 汉译英
答案: tensile strength
22、填空题：
22 疲劳屈服强度/条件屈服强度 汉译英
答案: offset yield strength
0311签到答题
1、判断题：
17 The greater the plastic modulus, the stiffer the material.
A: 正确
B: 错误
答案: 错误
2、判断题：
18 Ductility involves a elastic deformation.
A: 正确
B: 错误
答案: 错误
3、判断题：
19 The more brittle a material is, the more the specimen will neck before fracture.
A: 正确
B: 错误
答案: 错误
4、判断题：
20 The creep rate is higher at higher temperature or stress.
A: 正确
B: 错误
答案: 正确
5、填空题：
1 Ductility 英译汉
答案: 延展性
6、填空题：
2 脆性的 汉译英
答案: brittle
7、填空题：
3 伸长率 汉译英
答案: percentage elongation
8、填空题：
4 颈缩现象汉译英
答案: necking phenomenon##%_YZPRLFH_%##necking phenomena
9、填空题：
5 回弹性 汉译英
答案: resilience
10、填空题：
6 韧性 汉译英
答案: toughness
11、填空题：
7 Notched specimen英译汉
答案: 切口样条##%_YZPRLFH_%##缺口样条
12、填空题：
8 Carcks and flaws英译汉
答案: 断裂和缺陷##%_YZPRLFH_%##裂口和缺陷
13、填空题：
9 疲劳强度 汉译英
答案: fatigue strength
14、填空题：
10 Fatigue failure 英译汉
答案: 疲劳失效##%_YZPRLFH_%##疲劳断裂
15、填空题：
11 S(stress)-N(cycles) diagrams英译汉
答案: 应力周数曲线##%_YZPRLFH_%##应力-周数曲线##%_YZPRLFH_%##应力 周数曲线
16、填空题：
12 疲劳极限 汉译英
答案: fatigue limit##%_YZPRLFH_%##endurance limit
17、填空题：
13 疲劳比 汉译英
答案: fatigue ratio
18、填空题：
14 蠕变 汉译英
答案: creep
19、填空题：
15 蠕变成型 汉译英
答案: creep forming
20、填空题：
16 Spring back 英译汉
答案: 回弹
北化第三讲单元检测
1、单选题：
1单选Which statement is correct?
A: A. All materials have a pronounced or obviously yield point.
B: B. Some materials do not have clear yield point.
C: C. Grey cast iron does not have yield point
D: D. None of above is correct.
答案: B. Some materials do not have clear yield point.
2、单选题：
2单选_____is defined as a sudden application of a load confined to a localized area of a material.
A: A. Stretch
B: B. Compress
C: C. Punch
D: D. Impact
答案: D. Impact
3、单选题：
3单选After a certain amount of time has elapsed under constant load, the creep strain (plastic deformation) will ______.
A: A. decrease
B: B. increase
C: C. not change
D: D.be any possible value
答案: B. increase
4、单选题：
4单选The ______ the heat capacity, the _____ the amount of heat needed to produce a temperature change.
A: A.larger, greater
B: B.larger, smaller
C: C.lower, greater
D: D.None of above is correct
答案: A.larger, greater
5、多选题：
5多选What are correct for describing off-set yield strength?
A: A.Off-set yield strength is the stress corresponding to the plastic limit.
B: B.It is the lowest stress at which a limited amount of plastic deformation occurs.
C: C.Off-set yield strength is the stress corresponding to the elastic limit.
D: D.If a plastic strain of 0.002 in./in. can be tolerated, the stress that produces this strain is designated as the yield strength of the material at 0.2% offset.
答案: B.It is the lowest stress at which a limited amount of plastic deformation occurs.;
D.If a plastic strain of 0.002 in./in. can be tolerated, the stress that produces this strain is designated as the yield strength of the material at 0.2% offset.
6、多选题：
6多选Which statements are correct?
A: A.The area under which the straight-line portion (elastic region) of the stress-strain curve is modulus of resilience.
B: B.Modulus resilience is a measure of the energy per unit volume that the material can absorb without plastic deformation.
C: 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: D.None of the above statement is correct.
答案: 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.
7、多选题：
7多选Which of the following statements are correct?
A: A.The greater the modulus, the stiffer the material.
B: B.The stiffer the material, the higher the resistance of the material to deformation.
C: C.The higher the magnitude of elastic modulus, the higher the magnitude of the inter-atomic bonding forces in a material.
D: D.The higher the magnitude of elastic modulus, the lower the magnitude of the intermolecular bonding forces in a material.
答案: 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.
8、多选题：
8多选Which of the experiments are used for measuring toughness?
A: A.Charpy impact test
B: B.Izod impact test
C: C.Knoop Hardness
D: D.None of the above is correct
答案: A.Charpy impact test;
B.Izod impact test
9、多选题：
9多选What are the methods of applying load in a fatigue test?
A: A. Constant Stress
B: B.Temporary Loading
C: C.Repetitious Stress
D: D.Reversal Stress
答案: C.Repetitious Stress;
D.Reversal Stress
10、多选题：
10多选What are the typical methods for penetration testing of hardness?
A: A.Brinell Hardness
B: B.Vickers Hardness
C: C.Rockwell Hardness
D: D.Mohs Hardness
答案: A.Brinell Hardness;
B.Vickers Hardness;
C.Rockwell Hardness
11、多选题：
11多选For electrochemical corrosion, the cell consists of four basic components: , , , and an external conducting connection between anode and cathode.
A: A.Ions
B: B.Anode
C: C.Cathode
D: D.Electrolyte
答案: B.Anode;
C.Cathode;
D.Electrolyte
12、判断题：
12判断Ductile materials can stand large plastic deformation without fracture.
A: 正确
B: 错误
答案: 正确
13、判断题：
13判断Materials with high elastic modulus are typically soft.
A: 正确
B: 错误
答案: 错误
14、判断题：
14判断Toughness is the ability or capacity of a material to absorb energy during elastic deformation.
A: 正确
B: 错误
答案: 错误
15、判断题：
15判断A ductile material will be ductile forever.
A: 正确
B: 错误
答案: 错误
16、判断题：
16判断The maximum stress that can be sustained for a specified number of cycles without fracture is called fatigue limit.
A: 正确
B: 错误
答案: 正确
17、判断题：
17判断Many nonferrous metals, such as aluminum and other non-ferrous metals exhibit no fatigue limit.
A: 正确
B: 错误
答案: 正确
18、判断题：
18判断Creep happens at specific temperatures.
A: 正确
B: 错误
答案: 错误
19、判断题：
19判断Higher stress or higher temperature reduces the rupture time and decreases the creep rate.
A: 正确
B: 错误
答案: 错误
20、判断题：
20判断A material with high bonding energy has low thermal expansion coefficient.
A: 正确
B: 错误
答案: 正确
北化第三讲学习测试(1)
1、单选题：
1.Which equation describes the Engineering strain?
A: A. σ= F/A0
B: B. ε= (l-l0)/l0
C: C. σT = F/Ai
D: D. εT= ln(li/l0)
答案: B. ε= (l-l0)/l0
2、单选题：
2.Which one represents the hardest sample of Mohs hardness?
A: A. Talc
B: B. Calcite
C: C. Quartz
D: D. Diamond
答案: D. Diamond
3、单选题：
3. What is range of Mohs Scale?
A: A. 1-10
B: B. 1-100
C: C. 1-1000
D: D. 1-100%
答案: A. 1-10
4、单选题：
4. In a stress-strain diagram, which region refers to ductile property?
A: A. Elastic Region
B: B. Plastic Region
C: C. Elastic and Plastic Region
D: D. No
答案: C. Elastic and Plastic Region
5、单选题：
5._____is defined as a sudden application of a load confined to a localized area of a material.
A: A.Stretch
B: B.Compress
C: C.Punch
D: D.Impact
答案: D.Impact
6、单选题：
6. Adding more carbon, the steel show ___transition temperature ranges
A: A.Wider
B: B.Narrower
C: C.Same
D: D.No
答案: A.Wider
7、单选题：
7. The _____ the stress is applied to the material, the less cycle it will endure before its failure.
A: A.Lower
B: B.Higher
C: C.Quick
D: D.Slow
答案: B.Higher
8、单选题：
8. Fatigue limits of a typical ferrous alloy is about____ tensile strength.
A: A. Half
B: B. 1/3
C: C. 1/4
D: D. 1/5
答案: A. Half
9、多选题：
9.Which statement is correct?
A: A. The area under which the straight-line portion (elastic region) of the stress-strain curve is modulus of resilience
B: B. Modulus resilience is a measure of the energy per unit volume that the material can absorb without plastic deformation
C: 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: D. No
答案: 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
10、多选题：
10. Which statements about creep forming is correct?
A: A. A workpiece is loaded against a die or tool for a specific time
B: B. The load is normally applied using pressure or vacuum at temp. around 600°C
C: C. The process results in predetermined shapes that required little or no machining
D: D. No
答案: A. A workpiece is loaded against a die or tool for a specific time;
C. The process results in predetermined shapes that required little or no machining
11、多选题：
11. What information you can find in a stress-strain diagram?
A: A. Elastic modulus
B: B. Yield Point
C: C. Ultimate Strength
D: D. Fracture Point
答案: A. Elastic modulus;
B. Yield Point;
C. Ultimate Strength;
D. Fracture Point
12、多选题：
12. Which of the below statement are correct?
A: A. Impact test is a typical static testing method.
B: B. Toughness is a measure of a material’s resistance to brittle fracture when a crack is present.
C: C. A material’s tensile stress tends to gradually increase with the size of the crack increases.
D: D. Fracture toughness is used in design to find allowable flaw size.
答案: B. Toughness is a measure of a material’s resistance to brittle fracture when a crack is present.;
D. Fracture toughness is used in design to find allowable flaw size.
13、多选题：
13. Which of the below terms have same meaning?
A: A. Ultimate Strength
B: B. Tensile Strength
C: C. Yield Strength
D: D. Uniform Strain
答案: A. Ultimate Strength;
B. Tensile Strength
14、多选题：
14. Hard materials have good resistance to _____ and _____.
A: A. Wear
B: B. Impact
C: C. Abrasion
D: D. Torsion
答案: A. Wear;
C. Abrasion
15、判断题：
15. High temperature may change a ductile material into brittle.
A: 正确
B: 错误
答案: 错误
16、判断题：
16. A brittle material has very little plastic deformation.
A: 正确
B: 错误
答案: 正确
17、判断题：
17. When broken, cross-section image of a ductile material has flake-like structure.
A: 正确
B: 错误
答案: 错误
18、判断题：
18. Creep happens at specific temperatures.
A: 正确
B: 错误
答案: 错误
19、判断题：
19. The creep rate is higher at a high temperature.
A: 正确
B: 错误
答案: 正确
20、判断题：
20. All materials have a fatigue limit.
A: 正确
B: 错误
答案: 错误
21、判断题：
21. The tensile strength of steel（MPa) is about 3.4 times of that of Brinell hardness.
A: 正确
B: 错误
答案: 正确
22、判断题：
22. A material subjects to a deformation under force and can go back to its original shape. We call the material undergoes an elastic deformation.
A: 正确
B: 错误
答案: 正确
选择题和判断题
1、多选题：
What are molecular structure in polymer?
A: Linear
B: Branched
C: Crosslinked
D: Network
答案: Linear;
Branched;
Crosslinked;
Network
2、多选题：
Which bond can be existed in polymer?
A: Na-Cl
B: C=C
C: C-Cl
D: C=O
答案: C=C;
C-Cl;
C=O
3、判断题：
The molecular weight of polymers is a fixed value.
A: 正确
B: 错误
答案: 错误
4、判断题：
A polymer chain is straight.
A: 正确
B: 错误
答案: 错误
第四章Defects
0316签到答题
1、单选题：
1 单选 The following types of hardness which is through the resistace of scracthing?
A: A Knoop hardness (HK)
B: B Vickers hardness (HV)
C: C Scleroscope (HSc) test
D: D Mohs hardness
答案: D Mohs hardness
2、多选题：
2 多选 The following types of hardness which is through the degree of penetration?
A: A Brinell hardness(HB)
B: B Vickers hardness (HV)
C: C Rockwell hardness (HR)
D: D Mohs hardness
答案: A Brinell hardness(HB);
B Vickers hardness (HV);
C Rockwell hardness (HR)
3、判断题：
12 判断 Hard materials have good resistance towards wear and abrasion.
A: 正确
B: 错误
答案: 正确
4、判断题：
13 判断 If you want to leave a permanent mark on your sample, you have to apply a stree which is lower than the tensile strength.
A: 正确
B: 错误
答案: 错误
5、判断题：
14 判断 The thermal expansion coefficient is reversely correlated to the melting point of certain metal materials.
A: 正确
B: 错误
答案: 正确
6、判断题：
15 判断 Elements added to metals, porosity and other crystal imperfections increase their thermal conductivity.
A: 正确
B: 错误
答案: 错误
7、判断题：
16 判断 Polymers lacking free electrons and having a less crystalline structure. So for polymers, normally show poor thermal conductivity and good thermal insulators.
A: 正确
B: 错误
答案: 正确
8、填空题：
3 硬度 汉译英
答案: Hardness##%_YZPRLFH_%##hardness
9、填空题：
5 heat capacity 英译汉 热容量 热容
答案: 热容量##%_YZPRLFH_%##热容
10、填空题：
4 比热 汉译英
答案: Specific heat##%_YZPRLFH_%##specific heat
11、填空题：
6 Coefficient of thermal conductivity 英译汉
答案: 导热系数##%_YZPRLFH_%##热传导系数
12、填空题：
7 孔隙率 汉译英
答案: porosity
13、填空题：
8 热膨胀 汉译英
答案: Thermal expansion##%_YZPRLFH_%##thermal expansion
14、填空题：
9 CTE Cofficient of thermal expansion 英译汉
答案: 热膨胀系数##%_YZPRLFH_%##膨胀系数
15、填空题：
10 导热性 汉译英
答案: thermal conductivity##%_YZPRLFH_%##Thermal conductivity
16、填空题：
11 填空 The mechanism of thermal conductivity mainly in two ways: the movement of free electrons and the movement of—(声子 复数) (lacttice vibration).
答案: phonons
0318签到答题
1、填空题：
1 BCC 体心立方 汉译英
答案: Body centered cubic##%_YZPRLFH_%##body centered cubic
2、填空题：
2 brass 英译汉
答案: 黄铜
3、填空题：
3 Nonferrous metals
答案: 有色金属
4、填空题：
4 不透光的 汉译英
答案: Opaque##%_YZPRLFH_%##opaque
5、填空题：
5 Powder Matallurgy 英译汉
答案: 粉末冶金
6
上方为免费预览版答案，如需购买完整答案，请点击下方红字：
为了方便下次阅读，建议在浏览器添加书签收藏本网页
添加书签方法：
1.电脑按键盘的Ctrl键+D键即可收藏本网页
2.手机浏览器可以添加书签收藏本网页
点击浏览器底部菜单-【添加书签】-收藏本网页
点击浏览器底部菜单-【书签/历史】-可查看本网页
获取更多慕课答案，欢迎在浏览器访问我们的网站：
http://mooc.mengmianren.com
注：请切换至英文输入法输入域名，如果没有成功进入网站，请输入完整域名：http://mooc.mengmianren.com/
我们的公众号
打开手机微信，扫一扫下方二维码，关注微信公众号：萌面人APP
本公众号可查看各种网课答案，还可免费查看大学教材答案
点击这里，可查看公众号功能介绍
APP下载
APP功能说明
1.可查看各种网课答案
点击【萌面人官网】，可查看知到智慧树，超星尔雅学习通，学堂在线等网课答案
点击【中国大学慕课答案】，可查看mooc慕课答案
2.可一键领取淘宝/天猫/京东/拼多多无门槛优惠券
如图所示，点击对应图标即可领取淘宝/天猫/京东/拼多多无门槛优惠券
硅粒呛封偷肝嫂矢硷牢淘赦欧